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Edit Mode is: ON For Instructors Only Quizzes Preview Test: Quiz1_Ozonolysis_Chem332 H Preview Test: Quiz1_Ozonolysis_Chem332 Description Chem 332 Quiz#1Ozonolysis (part of Exam#1) Instructions Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this Test] Multiple Attempts This Test allows multiple attempts. Force Completion Once started, this Test must be completed in one sitting. Save All Answers Save and Submit What is the missing product of this ozonolysis reaction? A. Formaldehyde B. Acetic acid C. Acetaldehyde D. Acetone E. carbon dioxide Question 1 0.5 points Save Answer Which ozonide intermediate would result from the ozonolysis of styrene (vinylbenzene, C 6 H 5 CH=CH 2 )? A. Compound A B. Compound B C. Compound C D. Compound D E. None of these. Question 2 0.5 points Save Answer ? Question Completion Status:

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Page 1: Combined

Edit Mode is: ON• For Instructors Only Quizzes Preview Test: Quiz1_Ozonolysis_Chem332H

Preview Test: Quiz1_Ozonolysis_Chem332

Description Chem 332 Quiz#1-‐‑Ozonolysis (part of Exam#1)

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this

Test]

Multiple

Attempts

This Test allows multiple attempts.

Force

Completion

Once started, this Test must be completed in one sitting.

Save All Answers Save and Submit

What is the missing product of this ozonolysis reaction?

A. Formaldehyde

B. Acetic acid

C. Acetaldehyde

D. Acetone

E. carbon dioxide

Question 1 0.5 points Save Answer

Which ozonide intermediate would result from the ozonolysis of styrene (vinylbenzene, C6H5CH=CH2)?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these.

Question 2 0.5 points Save Answer

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Which of the compounds (below) yields isopropanol as one of the products of 1) ozonolysis + 2) NaBH4 workup ?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these compounds

Question 3 0.5 points Save Answer

Which of the compounds (below) yields 2-butanone as one of the products of 1) ozonolysis + 2) workup with DMS ?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these compounds

Question 4 0.5 points Save Answer

Which compound forms carbonic acid under ozonolysis conditions with an oxidative workup with peroxide inacid?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Question 5 0.5 points Save Answer

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Which compound is the least reactive under ozonolysis conditions with an oxidative workup with peroxide inacid?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Question 6 0.5 points Save Answer

Which molozonide will form formaldehde under ozonolysis conditions ?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Question 7 0.5 points Save Answer

Which ozonide will form formaldehde under ozonolysis conditions ?

Question 8 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Which ONE statement (below) is NOT true about the ozonolysis reaction.

A. Cyclic ketones can never be formed.

B. Cycloalkenes can undergo ozonolysis

C. Formation of a molozonide is a concerted process.

D. Aldehydes might be formed

E. Ozone is a 1,3-‐‑dipole

Question 9 0.5 points Save Answer

Which ONE is NOT used as a Reagent in the workup conditions of an ozonolysis reaction that produces analdehyde.

A. Acetic Acid

B. Zinc metal

C. Vinegar

D. DMSO

E. CH3-‐‑S-‐‑CH3

Question 10 0.5 points Save Answer

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Edit Mode is: ON• Course Content Quizzes for Exam 1 Preview Test: Quiz2_Conjugation_Chem332H

Preview Test: Quiz2_Conjugation_Chem332

Description Chem 332 Quiz#2 (part of Exam#1)

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

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Which structure is NOT conjugated ?

A.Compound  A

B. Compound  B

C.Compound  C

D.Compound  D

E. Compound E

Question 1 0.5 points Save Answer

Which Structures are conformers?

A. Structure A and Structure D

B. Structure A and Structure E

C. Structure B and Structure E

Question 2 0.5 points Save Answer

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C. Structure B and Structure E

D. Structure C and Structure E

E. Structure A and Structure C

Which diene is in the s-cis conformation AND in an (E) and (Z) configuration?

A. Structure A

B. Structure C

C. Structure B

D. Structure D

E. Structure E

Question 3 0.5 points Save Answer

Which conjugated diene is currently in an s-cis conformation ?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these compounds

Question 4 0.5 points Save Answer

Which conjugated diene is currently in an s-trans conformation ?

Question 5 0.5 points Save Answer

Page 7: Combined

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Which resonance forms represent the intermediate carbocation that will produce the kinetic and thermodynamic products in this

addition reaction?

A. Structure B and Structure E

B. Structure  A  and  Structure  D

C.Structure  C  and  Structure  D

D. Structure B and Structure D

E. Structure B and Structure C

Question 6 0.5 points Save Answer

Which ONE statement is True about the addition reaction shown below?

A. The 1,4-‐‑addition product is shown and the major product under thermodynamic control.

B. The  1,4-­addition  product  is  shown  and  the  major  product  under  kinetic  control.

C. The 1,2-‐‑addition product is shown and the major product under thermodynamic control.

Question 7 0.5 points Save Answer

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D.The  1,2-­addition  product  is  shown  and  the  favored  product  under  kinetic  control.

Which ONE statement is True about the addition reaction shown below?

A. The  1,4-­addition  product  is  shown  and  the  major  product  under  kinetic  control.

B. The  1,2-­addition  product  is  shown  and  the  favored  product  under  kinetic  control.

C. The 1,2-‐‑addition product is shown and the major product under thermodynamic control.

D. The 1,4-‐‑addition product is shown and the major product under thermodynamic control.

Question 8 0.5 points Save Answer

Which ONE statement is True about the overall reaction shown below?

A. This  is  the  Cope  Rearrangement,  which  in  this  case,  favors  the  production  of  a  more  conjugated  system.

B. This  is  the  Diels-­Alder  Reaction,  which  requires  one  of  the  reactants  to  be  an  s-­cis  diene.

C. This is the Cope Rearrangement, which requires the reactant to be conjugated.

D. This is the Cope Rearrangement, which produces a product that is a conformational change.

E. This is the Diels-‐‑Alder Reaction, which is a 6-‐‑electron, concerted process.

Question 9 0.5 points Save Answer

Which ONE compound is major product of this reaction?

A. 2,5-‐‑dimethyl-‐‑1,5-‐‑hexadiene

B. 2,5-‐‑dimethyl-‐‑2,4-‐‑hexadiene

C. 2,5-‐‑dimethyl-‐‑1,4-‐‑hexadiene

D. (Z)-‐‑2,5-‐‑dimethyl-‐‑1,3-‐‑hexadiene

E. (E)-‐‑2,5-‐‑dimethyl-‐‑1,3-‐‑hexadiene

Question 10 0.5 points Save Answer

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Save All Answers Save and Submit

Save and Submit

Page 10: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 1 Preview Test: Quiz3_DielsAlder_Chem332H

Preview Test: Quiz3_DielsAlder_Chem332

Description Chem 332 Quiz#3-‐‑DielsAlder (part of Exam#1)

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this

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Choose  the  structures  of  the  starting  diene  and  dienophile  necessary  to  prepare  this  molecule?

A.

B.

C.

D.

Question 1 0.5 points Save Answer

Which  of  the  compounds  will  react  as  a  diene  in  a  Diels-­Alder  reaction?

A. Compound A

B. Compound B

Question 2 0.5 points Save Answer

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B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Which  compound  can  react  as  a  diene  in  a  Diels-­Alder  reaction?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 3 0.5 points Save Answer

Identify  the  diene  and  dienophile  which  would  give  the  Diels  Alder  product  shown.

Question 4 0.5 points Save Answer

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A. Reagents A

B. Reagents B

C. Reagents C

D. Reagents D

E. None of these.

Which  compound  CANNOT  react  as  a  diene  in  a  Diels-­Alder  reaction?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 5 0.5 points Save Answer

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Identify  the  diene  used  in  the  reaction  shown  above.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 6 0.5 points Save Answer

What  is  the  product  of  the  reaction  shown  below?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 7 0.5 points Save Answer

Question 8 0.5 points Save Answer

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Which  conjugated  diene  would  react  the  fastest  with  maleic  anhydride?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Which  structure  (A-­E)  represents  the  product  of  this  reaction?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Question 9 0.5 points Save Answer

Which  structure  (A-­E)  represents  the  product  of  this  reaction?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. Compound E

Question 10 0.5 points Save Answer

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E. Compound E

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Page 16: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 1 Preview Test: Quiz4_Alcohols_Chem332H

Preview Test: Quiz4_Alcohols_Chem332

Description Chem 332 Quiz#2 Alcohols -‐‑ Part of Exam#1

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this

Test]

Multiple

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Force

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Choose  the  best  set  of  reagents  for  carrying  out  the  chemical  conversion  (below).

A. 1) TMS-‐‑Cl, Et3N

2) MeMgBr, ether

3) H3O+

B. None of these Reagent Sets.

C. 1) NaBH4, MeOH

2) MeOH

D. 1) PBr3

2) MeOH

E. 1) LiAlH4, ether

2) H3O+

3) MeMgBr, ether

4) H3O+

Question 1 0.5 points Save Answer

Give  the  common  names  for  each  of  these  compounds.

A. allyl alcohol

ethylene glycol

Question 2 0.5 points Save Answer

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Page 17: Combined

ethylene glycol

ethanol

hydroquinone

B. vinyl alcohol

propylene glycol

ethanol

quinone

C. vinyl alcohol

ethylene glycol

ethanol

hydroquinone

D. allyl alcohol

propylene glycol

ethanol

quinone

The  best  reagents  for  accomplishing  this  transformation  are:

A. 1) Hg(OAc)2, H2O

2) NaBH4

B. 1) BH3, THF

2) H2O2, -‐‑OH

C. 1) OsO4, pyridine

2) NaHSO4, H2O

D. 1) m-‐‑CPBA, CH2Cl2

2) H3O+

E. None of these Reagent Sets.

Question 3 0.5 points Save Answer

A  highly  useful  and  general  method  for  the  synthesis  of  alcohols  is  the  addition  of  Grignard  reagents  to  carbonylcompounds.    Show  what  Grignard  reaction  would  NOT  be  used  to  prepare  the  alcohol  (below).

Question 4 0.5 points Save Answer

Page 18: Combined

A. Reactants A

B. Reactants B

C. Reactants C

D. Reactants D

Give  the  major  organic  product  for  the  reaction  below.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

Question 5 0.5 points Save Answer

Give  the  major  organic  product  for  the  reaction  below.

Question 6 0.5 points Save Answer

Page 19: Combined

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Give  the  major  organic  product  for  the  reaction  below.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 7 0.5 points Save Answer

Give  the  major  organic  product  from  the  reaction  below.

Question 8 0.5 points Save Answer

Page 20: Combined

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Choose  the  best  set  of  reagents  for  carrying  out  the  chemical  conversion  (below).

A. None of these Reagent Sets.

B. 1) TMS-‐‑Cl, Et3N

2) MeMgBr, ether

3) H3O+

C. PCC, CH2Cl2

D. 1) NaBH4, ethanol

2) H3O+

E. 1) LiAlH4, ether

2) H3O+

Question 9 0.5 points Save Answer

Choose  the  best  set  of  reagents  for  carrying  out  the  chemical  conversion  (below).

A. 1) NaBH4, ethanol

Question 10 0.5 points Save Answer

Page 21: Combined

Save All Answers Save and Submit

1) NaBH4, ethanol

2) H3O+

B. 1) TMS-‐‑Cl, Et3N

2) MeMgBr, ether

3) H3O+

C. None of these Reagent Sets.

D. PCC, CH2Cl2

E. 1) PBr3

2) NaOH

Save and Submit

Page 22: Combined

Edit Mode is: ON• For Instructors Only Quizzes Preview Test: Quiz5_Aldehydes and Ketones_Chem332H

Preview Test: Quiz5_Aldehydes and Ketones_Chem332

Description Chem 332 Quiz#5 (part of Exam#1)

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

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What functional group results from the reaction shown below?

A. aldehyde

B. carboxylic acid

C. alcohol

D. conjugated diene

E. ketone

Question 1 0.5 points Save Answer

What is the product of the reaction shown below?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 2 0.5 points Save Answer

Question 3 0.5 points Save Answer

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What is the best reagent to use for the reaction shown below?

A. 1) NaBH4, ethanol 2) H3O+

B. NaCN, DMSO

C. NaOH, methanol, heat

D. 1) CH2=P(Ph)3 2) H3O+

E. PCC

Question 3 0.5 points Save Answer

Which of the compounds below is an acetal?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 4 0.5 points Save Answer

What is the product of the reaction below?

A. 3-‐‑methylpentane

B. 3-‐‑methyl-‐‑1-‐‑pentyne

C. 3-‐‑methylhexane

D. 3-‐‑methyl-‐‑2-‐‑pentanol

E. 3-‐‑methyl-‐‑2-‐‑pentene

Question 5 0.5 points Save Answer

Question 6 0.5 points Save Answer

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What is the product of the reaction below?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Conpounds

Question 6 0.5 points Save Answer

What are the products of the reaction shown below?

A. cyclohexanone and ethanol

B. cis-‐‑1,2-‐‑cyclohexanediol and ethanol

C. trans-‐‑1,2-‐‑cyclohexanediol and ethanol

D. cyclohexanone and ethanal

E. cis-‐‑1,2-‐‑cyclohexanediol and ethanal

Question 7 0.5 points Save Answer

What is the product of the reaction shown below?

A. 4-‐‑methyl-‐‑1-‐‑pentene

B. 1-‐‑pentene

C. 2-‐‑methyl-‐‑1-‐‑hexene

D. 2-‐‑methyl-‐‑1-‐‑pentene

Question 8 0.5 points Save Answer

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E. 2-‐‑methyl-‐‑2-‐‑propyloxirane

Identify the missing reagent for the reaction shown below.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 9 0.5 points Save Answer

What is the product of the reaction sequence shown below?

A. 2-‐‑methyl-‐‑2-‐‑hexene

B. 2,3-‐‑dimethyl-‐‑2-‐‑pentene

C. 2-‐‑methyl-‐‑1-‐‑hexene

D. 3-‐‑methyl-‐‑1-‐‑hexene

E. 2-‐‑methyl-‐‑1-‐‑pentene

Question 10 0.5 points Save Answer

Save and Submit

Page 26: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 2 Preview Test: Quiz6_Carboxylic Acids_Chem332H

Preview Test: Quiz6_Carboxylic Acids_Chem332

Description Chem 332 Quiz#6 (part of Exam#2)

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this Test]

Multiple Attempts This Test allows multiple attempts.

Force Completion Once started, this Test must be completed in one sitting.

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Choose  the  BEST  reagent(s)  for  carrying  out  the  reaction  below.

A. 1.    BH3          2.    H3O+

B. NaBH4,  ethanol

C. acid, water, heeeet

D.Tollens’  Reagent

E. CH3I

Question 1 0.5 points Save Answer

Which reagent CANNOT ever be used on an aldehyde to produce a carboxylic acid?

A. the oxygen in air + water

B. Ag2O + base

C. hydrogen peroxide

D. The Silver Mirror Test

E. LAH

Question 2 0.5 points Save Answer

Name the compounds below.

A. 3-‐‑propylpentanoic acid

4-‐‑hydroxy-‐‑3-‐‑methylbutanoic acid

2-‐‑bromo-‐‑4-‐‑ethylbenzenecarboxylic acid

B. 3-‐‑ethylhexanoic acid

4-‐‑hydroxy-‐‑3-‐‑methylbutanoic acid

4-‐‑ethylbenzenecarboxylic acid

C. 3-‐‑propylpentanoic acid

3-‐‑(hydroxymethyl)butanoic acid

2-‐‑bromo-‐‑4-‐‑ethylbenzenecarboxylic acid

D. 3-‐‑ethylhexanoic acid

4-‐‑hydroxy-‐‑3-‐‑methylbutanoic acid

2-‐‑bromo-‐‑meta-‐‑ethylbenzenecarboxylic acid

Question 3 0.5 points Save Answer

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Page 27: Combined

E. 3-‐‑ethylhexanoic acid

4-‐‑hydroxy-‐‑3-‐‑methylbutanoic acid

2-‐‑bromo-‐‑4-‐‑ethylbenzenecarboxylic acid

Which  structure  below  is  the  tetrahedral  intermediate  in  the  acid-­catalyzed  Fischer  esterification  reaction  of  acetic  acid,  CH3CO2H,  and  ethanol,CH3CH2OH?

A. A

B. B

C. C

D. D

E. None of these structures

Question 4 0.5 points Save Answer

See the oxygen atom (with the red arrow) in the ethanol structure over the equilibrium arrow? Which Fischer Esterification product has anarrow correctly pointing at that same oxygen?

A. Structure A

B. Structure B

C. Structure C

D. Structure D

E. None of the Structures

Question 5 0.5 points Save Answer

Identify the lactone resulting from the INTRAmolecular Fischer-‐‑Esterification of the compound shown below.

Question 6 0.5 points Save Answer

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A. Structure A

B. Structure B

C. Structure C

D. Structure D

E. None of the Structures

To  convert  a  nitrile  to  a  carboxylic  acid,  as  shown  below,  you  need  to:

A. reduce  with  H2

B. hydrolyze  with  aqueous  acid  (H3O+)  and  heat.

C. reduce  with  LiAlH4

D.oxidize  with  Ag+

E. add a Grignard reagent

Question 7 0.5 points Save Answer

Choose  the  BEST  reagent(s)  for  carrying  out  the  reaction  below.

A.O3,  then  Zn  and  HOAc

B. 1.    Mg,  ether          2.    CO2                3.    H3O+

C. KMnO4 under basic conditions with heat

D.1.    NaCN          2.    H2SO4,  H2O,  heat

E. Tollens’  Reagent

Question 8 0.5 points Save Answer

Which carboxylic acid has the highest boiling point?

A. glycolic acid

B. butanoic acid

C. 2-‐‑hydroxypropanoic acid

Question 9 0.5 points Save Answer

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D. propionic acid

E. α-‐‑hydroxybutyric acid

What are the names of these carboxylic acids?

A. glycolic acid

lactic acid

α-‐‑methylbutyric acid

B. 1-‐‑hydroxypropionic acid

glycolic acid

α-‐‑methylbutanoic acid

C. 2-‐‑hydroxypropanoic acid

salicylic acid

α-‐‑methylbutyric acid

D. glycolic acid

2-‐‑hydroxyethanoic acid

α-‐‑methylbutyric acid

E. glycolic acid

lactic acid

1-‐‑methylbutyric acid

Question 10 0.5 points Save Answer

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Edit Mode is: ON• Course Content Quizzes for Exam 2 Preview Test: Quiz7_Enols-‐‑Enolates_Chem332H

Preview Test: Quiz7_Enols-‐‑Enolates_Chem332

Description Chem 332 Quiz#7 (part of Exam#2)

Instructions

Timed Test This Test has the time limit of 2 hour. You are notified when time expires, and you may continue or submit.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this Test]

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Force Completion Once started, this Test must be completed in one sitting.

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Rank the hydrogens (in the compound below) in order of decreasing acidity (most acidic proton listed first). Be careful, this question is a classic MCAT question and is harder that you might think. Keep track of ALL the alpha protons. (~Dr. K.).

A. Ha > Hb > Hc ≈ Hd

B. Ha > Hb ≈ Hc > Hd

C. Hb > Ha ≈ Hd > Hc

D. Ha > Hb ≈ Hd > Hc

E. Ha ≈ Hb > Hc ≈ Hd

Question 1 0.5 points Save Answer

Rank the compounds below in order of decreasing acidity (compound with the most acidic proton should be listed first).

A. III > II > I

B. II > III > I

C. II > I > III

D. I > II > III

E. I > III > II

Question 2 0.5 points Save Answer

Which  one  of  the  following  compounds  has  two  different  enol  forms?

A. 2,2-­dimethylcyclohexanone

B. 3,3-­dimethylcyclohexanone

C. 4,4-­dimethylcyclohexanone

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4,4-­dimethylcyclohexanone

D.cyclohexanone

How  many  alpha  hydrogens  are  there  on  2,4-­dimethyl-­3-­pentanone?

A. four (4)

B. None

C. six (6)

D. three (3)

E. two (2)

Question 4 0.5 points Save Answer

Alkylation with methyl iodide of the kinetic enolate of the compund shown below produces which product?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

Question 5 0.5 points Save Answer

Which  one  of  the  following  cannot  form  an  enolate  anion?    Look  at  your  lecture  notes  on  enolate  formation  (~  Dr.  K.)

A. 2,3-­dimethylbutanal

B. 2,2-­dimethylbutanal

C. 2-­ethylbutanal

D.3,3-­dimethylbutanal

Question 6 0.5 points Save Answer

What  is  the  product  of  the  reaction  below?

Question 7 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of the Compounds

Arrange  the  compounds  (below)  in  order  of  decreasing  acidity  (most  acidic  compound  listed  first).

A. III > II > I

B. II > III > I

C. III > I > II

D. I > II > III

Question 8 0.5 points Save Answer

Which  one  of  the  optically  active  compounds  (below)  racemizes  (loses  all  optical  activity)  in  dilute  KOH/CH3OH  solution?    Start  by  drawing  the  tautomerization  mechanism,  while  looking  at  what  happens  to  the  chiral  center.  -­  Dr.  K.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

Question 9 0.5 points Save Answer

Identify  the  major  organic  product  of  the  above  reaction.

Question 10 0.5 points Save Answer

Page 33: Combined

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of the Compounds

Save and Submit

Page 34: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 2 Preview Test: Quiz8_EnolateAlkylations_Chem332H

Preview Test: Quiz8_EnolateAlkylations_Chem332

Description Chem 332 Quiz#8-‐‑Enolate Alkylations -‐‑ Part of Exam 2.

This Quiz is due (to be submitted online) before Sunday (03/09/2014) at Noon (12pm).You may submit this quiz as many times as you wish -‐‑ knock yourselves out. Your Highest Score will be recorded. Use this Quiz to identify the topics that cause you trouble.

These Quiz questions are meant to give you feedback on how well you are digesting the course material -‐‑ before you take the exam. Submit your Quiz results before the end

of the 2-‐‑hour time limit AND before the listed deadline.

You should see your grade on the Compass 2G Grade Book immediately upon submitting your Quiz answers. Make sure to confirm that Compass actually awarded you the

Quiz Points.

Instructions

Timed Test This Test has the time limit of 2 hour. You are notified when time expires, and you may continue or submit.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this Test]

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Predict the product from the reaction sequence (below).

A. Compound A

B. Compound B

C. Compound C

D. Compound D

Question 1 0.5 points Save Answer

What gas evolves at the end of the acetoacetic ester sequence?

A. H2

B. SO2

C. carbon dioxide

D. oxygen

E. H2O vapor

Question 2 0.5 points Save Answer

Which of the following is used in the enolate chemistry shown below?

Question 3 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

Name the compounds.

A. malaeic anhydride, enol of acetone, LDA, Sodium acetate & acetoacetic ester

B. diethyl malonate, enolate of acetone, LDA, Sodium Ethoxide & ethyl acetoacetate

C. ethyl acetoacetate, enolate of acetone, LDS, Sodium Ethoxide & ethyl acetoacetate

D. diethyl malonate, enol of acetone, LSD, Sodium acetate & acetoacetic ester

E. diethyl malonate, enol of acetone, LDA, Sodium Ethoxide & ethyl acetoacetate

Question 4 0.5 points Save Answer

Lithium  diisoproylamide  is  a  _________

A.weak  base  that  only  attacks  protons  on  polar  O-­H  bonds.

B. good  nucleophile,  but  cannot  attack  protons  alpha  to  a  carbonyl  group.

C. sterically  hindered  base,  which  is  a  great  nucleophile  that  adds  to  carbonyl  functional  groups.

D. "baby  hydride",  which  attacks  protons  at  the  less  sterically  crowded  side  of  the  compound.

E. sterically  hindered  base,  which  attacks  alpha  protons  at  the  less  sterically  crowded  side  of  the  compound.

Question 5 0.5 points Save Answer

Give  the  major  organic  product  of  the  reaction  (below).

Question 6 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Give  the  major  organic  product  of  the  reaction  (below).

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 7 0.5 points Save Answer

Give  the  major  organic  product  of  the  reaction  (below)  done  at  RT  (room  temperature).

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 8 0.5 points Save Answer

In the acetoacetic acid synthesis (shown below), which one of the following electrophiles is used?

A. Compound A

Question 9 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Componds.

Alkylation with methyl iodide of the kinetic enolate of the compound (shown below) produces which product?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds

Question 10 0.5 points Save Answer

Save and Submit

Page 38: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 2 Preview Test: Quiz9_AldolClaisen_Chem332H

Preview Test: Quiz9_AldolClaisen_Chem332

Description Chem 332 Quiz#9-‐‑AldolClaisen -‐‑ Part of Exam 2.

This Quiz is due (to be submitted online) before Sunday (03/09/2014) at Noon (12pm).You may submit this quiz as many times as you wish -‐‑ knock yourselves out. Your Highest Score will be recorded. Use this Quiz

to identify the topics that cause you trouble. These Quiz questions are meant to give you feedback on how well you are

digesting the course material -‐‑ before you take the exam. Submit your Quiz results before the end of the 2-‐‑hour time limit

AND before the listed deadline.

You should see your grade on the Compass 2G Grade Book immediately upon submitting your Quiz answers. Make sure to

confirm that Compass actually awarded you the Quiz Points.

Instructions

Timed Test This Test has the time limit of 2 hour. This Test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this Test]

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Consider the reaction below and select the the best answer:

A. B forms a nucleophilic enolate; A is the electrophile; C is the base.

B. Both A and C are the electrophiles; B is the nucleophile.

C. A forms a nucleophilic enolate; B is the electrophile; C is the base.

D. Both A and B are the electrophiles; C is the nucleophile.

E. Dr. K. is making-‐‑up this reaction; A isn't even a real compound; and C is the base.

Question 1 0.5 points Save Answer

What  is  the  aldol  self-­addition  product  of  propanal?

A. 4-­hydroxyhexanal

B. 5-­hydroxyhexanal

C. 2-­hydroxy-­2-­methylpentanal

D.3-­hydroxy-­2-­methylpentanal

E. 3-­hydroxyhexanal

Question 2 0.5 points Save Answer

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E. 3-­hydroxyhexanal

Benzalacetone  is  the  crossed  aldol  condensation  product  formed  between  benzaldehyde  and  acetone.  Which  of  the  structures(below)  is  of  benzalacetone?  Remember  the  difference  between  a  condensation  product  and  an  addition  product.  ~  Dr.  K.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Question 3 0.5 points Save Answer

Which  is  the  product  of  this  intramolecular  aldol  condensation  reaction?

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Question 4 0.5 points Save Answer

Question 5 0.5 points Save Answer

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Identify  the  starting  reactant  needed  to  make  the  cyclic  ketone  product  (shown  below)  by  an  intramolecular  aldolcondensation  reaction.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Question 5 0.5 points Save Answer

Identify  the  starting  reactants  needed  to  make  the  product  (shown  below)  by  a  mixed  aldol  condensation.

A. acetophenone  (methyl  phenyl  ketone)  and  butanal

B. acetophenone  (methyl  phenyl  ketone)  and  2-­butanone

C. benzaldehyde  (C6H5CH=O)  and  2-­pentanone

D.benzaldehyde  (C6H5CH=O)  and  3-­pentanone

Question 6 0.5 points Save Answer

Which  of  the  following  is  the  Claisen  self-­condensation  product  of  ethyl  propanoate,  CH3CH2CO2Et  ?

Question 7 0.5 points Save Answer

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A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Identify  the  missing  reactant  in  the  reaction  shown  below.    Knowing  the  product  is  a  1,3-­keto  ester  should  help.Study  your  reactions  by  covering  each  reactant  in  your  lecture  notes  and  determine  the  reactant  structure.  Dr.  K.

A. ethyl  acetate,  CH3CO2Et

B. diethyl  oxalate,  EtO2CCO2Et

C. Carbonic Acid, HOCO2H

D.ethyl  formate,  HCO2Et

E. diethyl  carbonate,  (EtO)2C=O

Question 8 0.5 points Save Answer

Which  one  of  the  following  cannot  give  a  Claisen  condensation  product?

A.H2C=CHCH2CH2CO2Et

B. (CH3)3CCO2Et

C.C6H5CH2CO2Et

D. (CH3)3CCH2CO2Et

E. (CH3)2CHCH2CO2Et

Question 9 0.5 points Save Answer

Which  of  the  following  is  the  product  of  the  reaction  sequence  shown  below?

Question 10 0.5 points Save Answer

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Save All Answers Save and Submit

A. 4-­methyl-­3-­hexanone

B. 4-­octanone

C. 4-­heptanone

D.2-­ethylpentanoic  acid

E. 2-­propylbutanoic  acid

Save and Submit

Page 43: Combined

Edit Mode is: ON• Course Content Quizzes for Exam 2 Preview Test: Quiz10_MichaelEnamineRobinson_Chem332H

Preview Test: Quiz10_MichaelEnamineRobinson_Chem332

Description Chem 332 Quiz#10-‐‑MichaelEnamineRobinson -‐‑ Part of Exam 2.

This Quiz is due (to be submitted online) before Sunday (03/09/2014) at Noon (12pm).You may submit this quiz as many times as you wish -‐‑ knock yourselves out. Your Highest Score will be recorded. Use

this Quiz to identify the topics that cause you trouble. These Quiz questions are meant to give you feedback on how well

you are digesting the course material -‐‑ before you take the exam. Submit your Quiz results before the end of the 2-‐‑hour

time limit AND before the listed deadline.

You should see your grade on the Compass 2G Grade Book immediately upon submitting your Quiz answers. Make sure

to confirm that Compass actually awarded you the Quiz Points.

Instructions

Timed Test This Test has the time limit of 2 hour. You are notified when time expires, and you may continue or submit.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear when previewing this

Test]

Multiple

Attempts

This Test allows multiple attempts.

Force

Completion

Once started, this Test must be completed in one sitting.

Save All Answers Save and Submit

Which  carbon  atoms  are  most  susceptible  to  nucleophilic  attack  AND  which  carbon  would  be  attacked  by  a  cuprate  ?

A. II  and  III    -­a  cuprate  would  add  at  carbon  IV

B. II  and  III    -­a  cuprate  would  add  at  carbon  II

C. II  and  IV    -­a  cuprate  would  add  at  carbon  II

D. II  and  IV    -­a  cuprate  would  add  at  carbon  IV

E. III  and  IV    -­a  cuprate  would  add  at  carbon  IV

Question 1 0.5 points Save Answer

Which  one  of  the  following  reagents  adds  a  methyl  group  by  conjugate  (1,4-­addition)  addition  to  an  α,β-­unsaturatedketone  or  aldehyde?

A. (CH3)2CuLi

Question 2 0.5 points Save Answer

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A. (CH3)2CuLi

B. CH3MgBr

C. LAH

D.CH3Li

E. Hg(OAc)2

Heating  a  mixture  of  1,3-­diphenylacetone  and  acrolein  with  a  weak  base  gives  a  product,  C18H16O,  in  53%  yield.  Themechanism  for  product  formation  is  a  Michael  addition  followed  by  an  intramolecular  aldol  condensation.  Which  of  theabove  structures  is  the  product  of  this  reaction?Also,  as  a  side  question,  do  you  know  the  Name  Reaction  for  this  reaction  sequence?  ~Dr.  K.

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Question 3 0.5 points Save Answer

A  Robinson  annulation  reaction  is  shown  below.  Identify  the  missing  reagent  in  the  first  step.    

This  is  just  ONE  Name  Reaction  done  backwards.    Could  you  do  this  problem  if  it  wasn't  identified  as  a  Robinson  Annulation?    How  about  if  the  possible  answers  weren't  visible?How  about  if  it  was  in  a  2-­reaction  sequence?~  Dr.  K.

A. Compound A

Question 4 0.5 points Save Answer

Page 45: Combined

Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

The Stork Enamine reaction is a Michael addition on an enone.Predict the product of the reaction sequence (shown below).

A. Compound A

B. Compound B

C. Compound C

D. Compound D

E. None of these Compounds.

Question 5 0.5 points Save Answer

To make this compound (below), you need:Select the BEST answer available

A. Gilman Reagent and an enone

B. An enamine and a ketone

C. Gilman Reagent and an enamine

D. MethylGrignard and an enone

E. Gilman Reagent and a ketone

Question 6 0.5 points Save Answer

Question 7 0.5 points Save Answer

Page 46: Combined

What just happened here ??

A. Conjugate (Michael) Addition + Robinson Annulation

B. Direct (1,2-‐‑) Addition + Aldol

C. Conjugate (Michael) Addition + Aldol

D. Direct (1,2-‐‑) Addition + Claisen

E. Conjugate (Michael) Addition + Dieckmann

How can you make a 1,4-‐‑dicarbonyl compound?

A. Gilman Reagent + Aldehyde

B. Enamine + α-‐‑bromoester

C. Enamine + Enone

D. Cuprate + Ester

E. Enolate + enone

Question 8 0.5 points Save Answer

How can you make a 1,5-‐‑dicarbonyl compound?

A. Enamine + Alkylhalide

B. Cuprate + Ester

C. Gilman Reagent + Aldehyde

D. Enolate + enone

E. Enamine + α-‐‑bromoester

Question 9 0.5 points Save Answer

How can you make a cyclohexenone?

A. Dieckmann

B. Robinson

C. Michael

D. Hell-‐‑Volhardt-‐‑Zelinski

E. Aldol

Question 10 0.5 points Save Answer

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Page 47: Combined

Preview Test: Quiz11_AminePreps_Chem332

Test InformationDescription Chem 332 Quiz#11-Amine Preps - Part of Exam 3.

InstructionsTimed Test This test has a time limit of 2 hours.This test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 secondsremain.[The timer does not appearwhen previewing this test]

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Select the name for this compound below.

QUESTION 10.5 points Save Answer

0.5 points Save Answer

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A. N,N-diethyl-2-pentanamine

B. N,N-diethyl-1-methylbutanamine

C.N,N-diethyl-3-pentanamine

D. N,N-diethyl-4-pentanamine

E. N-ethyl-4-methyl-3-hexanamine

Which must have a higher boiling point (bp) than N,N­dimethyl­2­hexanamine ?(Select the BEST answer based on your knowledge of the relationshipbetween structure and bp)

A. all tertiary amines

B. secondary amine with lower mol. weight (fewer carbons)

C.secondary amine with higher mol. weight (more carbons)

D. tertiary amine with lower mol. weight (fewer carbons)

E. all amines with at least six total carbons

QUESTION 2

The compound below is classified as a(n):

QUESTION 3

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A. secondary amine.

B.amide.

C.arylamine

D. tertiary amine.

E. primary amine.

What is the product of the reaction sequence shown below ?

QUESTION 4

0.5 points Save Answer

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A. Compound A

B. Compound B

C.Compound C

D. Compound D

E. None of these Compounds

What is the product of the reaction sequence shown below ?

QUESTION 5

0.5 points Save Answer

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A. Compound A

B. Compound B

C.Compound C

D. Compound D

E. None of these Compounds

What is the product of the reaction shown below ?

QUESTION 6

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A. Compound A

B. Compound B

C.Compound C

D. Compound D

E. None of these Compounds

What is the product of the reaction sequence shown below ?

QUESTION 7

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A. Compound A

B. Compound B

C.Compound C

D. Compound D

E. None of these Compounds

What is the product of the reaction sequence shown below ?

QUESTION 8

0.5 points Save Answer

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A. Compound A

B. Compound B

C.Compound C

D. Compound D

E. None of these Compounds

The structure of heroin is shown below.Which ONE phrase is NOT true about this compound?

QUESTION 9

0.5 points Save Answer

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A. tertiary amine

B. opioid

C.can be derived from morphine

D. major component of poppy pods

E. highly addictive / habit forming

Which is NOT True about N-ethylaniline ?A. chiral at very low temperatures

B. sp3 hybridized nitrogen

C.cannot form hydrogen bonds

D. secondary amine

E. arylamine

QUESTION 10

Page 56: Combined

Preview Test: Quiz12_AmineRxns_Chem332

Test InformationDescription Chem 332 Quiz#12-AmineRxns - Part of Exam 3.

InstructionsTimed Test This test has a time limit of 2 hours.This test will save and submit automatically when the time expires.

Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain.[The timer does not appear whenpreviewing this test]

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What is the product of the reaction sequence shown below?

QUESTION 10.5 points Save Answer

0.5 points Save Answer

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A. Compound A

B. Compound B

C.Compound C

D.Compound D

What is the major product of the reaction sequence below ?

A. Compound A

B. Compound B

C.Compound C

QUESTION 2

0.5 points Save Answer

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D.Compound D

Which is true about the basicity of the nitrogen lone pairs in the compound below?

A. The alkyl amine is more basic than the imine

B. The heterocyclic amine is more basic than the imine

C.The sp2 hybridized amine is the most basic

D.The imine is the most basic

E. The secondary amine is the most basic

QUESTION 3

Which ONE answer most accurately describes the Structures (below)?

 

A. Structure 1 is a nitrite ion

B. Structure 3 is a nitrosamine

C.Structure 2 is a nitrosonium ion

D.Structure 1 is a nitrosonium ion

E. Structure 2 is diazo compound

QUESTION 4

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Which ONE answer most accurately describes the Structures (below)?

QUESTION 5

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A. Structure 1 is a diazonium ion

B. Structure 3 is a nitrite ion

C.Structure 2 is a nitrosonium ion

D.Structure 2 is a nitrosamine

E. Structure 3 is a diazonium ion

Which ONE answer most accurately ranks the basicity of subtituted anilines ? (Most basic compound on the left / Least basic compound on the right)

A. 4-methoxyaniline > p-nitroaniline > p-chloroaniline

B. 4-methoxyaniline > p-chloroaniline > p-nitroaniline

C.p-nitroaniline > p-chloroaniline > 4-methoxyaniline

D.4-cyanoaniline > p-methoxyaniline > p-nitroaniline

E. 4-cyanoaniline > p-chloroaniline > p-nitroaniline

QUESTION 6

0.5 points Save Answer

Which ONE answer most accurately lists the reaction steps for this transformation ?

 

A. 1)Sn+HCl 2)HONO+HCl 3)copper(I)chloride

B. 1)H2-Pd/Carbon 2)reductive amination 3)copper(I)chloride

QUESTION 7

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C.1)hydrogenation 2)diazotization 3)Sandmeyer

D.1)hydrogenation 2)nitrosation 3)Sandmeyer

E. 1)Sn+HCl 2)nitrosation 3)copper(I)oxide

Which ONE answer most accurately lists the reaction steps for this transformation ?

  

A. 1)Sn+HCl 2)HONO+HCl 3)copper(I)chloride

B. 1)hydrogenation 2)dialkylation 3)Sandmeyer

C.1)H2-Pd/Carbon 2)reductive amination 3)copper(I)chloride

D.1)Sn+HCl 2)nitrosation 3)copper(I)oxide

E. 1)hydrogenation 2)nitrosation 3)Sandmeyer

QUESTION 8

What is the product of the reaction sequence shown below ?This question is the most difficult of the entire quiz. So, here is a hint: This is a Name Reaction where the proton on the least hindered side of the ring is removed.Dr. K.

QUESTION 9

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A. Compound A

B. Compound B

C.Compound C

D.Compound D

E. None of these Compounds

What is the product of the reaction sequence shown below ?

QUESTION 10

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A. Compound A

B. Compound B

C.Compound C

D.Compound D

E. None of these Compounds

Page 63: Combined

Preview Test: Quiz13_AminoAcids_Chem332

Test InformationDescription Chem 332 Quiz#13-AminoAcids - Part of Exam 3.

InstructionsTimed Test This test has a time limit of 2 hours.You will be notified when time expires, and

you may continue or submit.Warnings appear when half the time, 5 minutes, 1 minute, and 30seconds remain.[The timer does not appear when previewing this test]

MultipleAttempts

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Humans are able to synthesize only 10 of the 20 common amino acids necessary for protein synthesis. The remaining 10 are called __________amino acids since they must be obtained from dietary sources.

A. deficient

B.nonessential

C.dietary

D.complex

E. essential

QUESTION 10.5 points Save Answer

QUESTION 2

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Given the pKa data below, select the one statement that is most true.

 

A. Asparagine has a net positive charge in pH 5.4 buffer

B.Arginine has a net negative charge in pH 5.4 buffer

C.Alanine is exclusively a zwitterion in pH 9.9 buffer

D.Arginine side chain is polar acidic

E. Asparagine has a net neutral charge in pH 5.4 buffer

QUESTION 2

Given the pKa data below, select the one statement that is most true.

 

A. Asparagine has a net neutral charge in pH 8.8 buffer

QUESTION 3

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B.Arginine has a net positive charge in pH 5.4 buffer

C.Asparagine has a polar basic side chain

D.Alanine is has a net positive charge in pH 6.1 buffer

E. Arginine has a net neutral charge in pH 5.4 buffer

Which of the compounds below is the zwitterion form of alanine?

A. Compound A

B.Compound B

C.Compound C

D.Compound D

QUESTION 4

Glutamic Acid (structure shown below with pKa values), has a pI of?

QUESTION 5

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A. 6.96

B.7.0

C.5.37

D.3.22

E. 5.93

The Fischer projection shown below denotes a ______ amino acid which has the _____ configuration.

A. L, S

B.L, R

C.D, R

D.D, S

QUESTION 6

Which amino acid CANNOT be formed from this synthetic method?

A. Leucine

Glycine

QUESTION 7

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B.C.Proline

D.Valine

E. Alanine

Which amino acid CANNOT be formed from this synthetic method?

A. Valine

B.Leucine

C.Phenylalanine

D.Glycine

E. Alanine

QUESTION 8

Which reactant is needed for the synthesis of alanine using reductive amination?Select the one best answer.

A. BINAP catalyst

B.acetaldehyde

C.enamido acid

QUESTION 9

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D.pyruvic acid

E. N­acetylated enamine

Which reactant is needed for the synthesis of alanine using the Strecker synthesis ?Select the one best answer.

A. BINAP catalyst

B.N­acetylated enamine

C.acetaldehyde

D.pyruvic acid

E. enamido acid

QUESTION 10

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Preview Test: Quiz14_Peptides_Chem332

Test InformationDescription Chem 332 Quiz#14-Peptides - Part of Exam 3.

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Which one answer is the abbreviated formula of the peptide shown below?Hint: Identify the amide bonds, then identify each amino acid. ~ Dr. K.

A. lys­ser­asp­ala

B. ser­lys­ala­asp

C.asp­ala­ser­lys

D.asp­ser­ala­lys

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E. asp­ala­ser­tyr

Which one answer Best describes the structure shown below?

A. tBoc­Phe­Pro

B.Fmoc­Phe­Pro

C.Fmoc­Pro­Phe

D. tBoc­Pro­Phe

E. tBoc­Ala­Pro

QUESTION 2

Which one answer Best describes the structure shown below?

A. Fmoc­Lys

B.N­acyl Fmoc­Lys

C.N­acyl tBoc­Arg

D.N­acyl tBoc­Lys

N­acyl Fmoc­Arg

QUESTION 3

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E.

Which one answer Best describes the product that forms when the compound below is treated with ammonia?

A. tBoc­Glu

B.Fmoc­Lys

C.Fmoc­Arg

D. tBoc­Lys

E. Fmoc­Glu

QUESTION 4

Which one answer describes the Best method to only deprotect the carboxyl group of the compound shown below?

A. HBr (aq)

B.H2 + Pd/Carbon

C.CF3­CO2H

D.NH3

E. piperidine

QUESTION 5

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Which one answer Best describes the N-terminal amino acid in the structure below?

QUESTION 6

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A. Pro

B.Met

C.Asn

D.Arg

E. Asp

Which one answer Best describes the C-terminal amino acid in the structure below?

A. Pro

B.Asp

QUESTION 7

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C.Arg

D.Met

E. Asn

Which one answer is NOT True about the use of DCC in peptide synthesis? A. DCC is used to protect the carboxyl group of the C­terminal end of the peptide

B.DCC is a coupling agent

C.DCC can be used to add an amino acid to the C­terminal end of a peptide

D.DCC makes the carboxyl group of the amino acid more reactive

E. DCC accelerates the rate of peptide bond formation

QUESTION 8

Which one answer is NOT True about disulfide bridges ? A. Disulfide bonds are a covalent bond between two sulfur atoms

B.Disulfide bridges are covalent bonds that stabilize the protein structure

C.Disulfide bridges contribute to the overall shape of a protein

D.Disulfide bonds result from the reduction of two thiol groups

E. Disulfide bridges can be made between two Cys residues

QUESTION 9

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Which one answer is NOT True about oxytocin (shown below)?

QUESTION 10

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A.Oxytocin is linked to "trust­inducing" behaviors

B.Gly is the N­terminal amino acid

C.Oxytocin is a nonapeptide

D.Oxytocin has a disulfide bond

E. There is no Phe in the primary structure

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Preview Test: Quiz15_ProteinSequencing_Chem332

Test InformationDescription Chem 332 Quiz#15-ProteinSequencing - Part of Exam 3.

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Which of the compounds below is a reagent used to identify the N-terminal amino acid?Hint: It is listed as PITC in your notes. ~ Dr. K.

A. Compound A

B. Compound B

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C.Compound C

D.Compound D

E. Compound E

Select the one statement that is most True about the peptide below.

A. Edman degradation produces the PTH derivative of Alanine

B. Complete hydrolysis produces three tyrosine residues.

C.Complete hydrolysis will produce only three different AAs that will react with ninhydrin

D.Digestion with Carboxypeptidase A will produce Glycine

E. Complete hydrolysis produces three proline residues

QUESTION 2

Select the one statement that is most True about the peptide below.

QUESTION 3

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A. Complete hydrolysis produces three proline residues

B. Complete hydrolysis produces three tyrosine residues.

C.Digestion with Carboxypeptidase A will produce Glycine

D.Edman degradation produces the PTH derivative of Alanine

E. Complete hydrolysis will produce only three different AAs that will react with ninhydrin

Select the Answer that Best completes the missing terms in the following statement:_______ between a series of amino acids often contribute to the formation of (an) _______, which is part of the overall 3D shape in the _______

of the protein or peptide.  Read this carefully. ~ Dr. K.A. Hydrogen bonding ... disulfide bridges ... secondary structure

B. Hydrogen bonding ... α-helix ... tertiary structure

C.London dispersion forces ... β−pleated sheets ... primary structure

D.Hydrogen bonding ... tertiary subunits ... quaternary structure

E. Electrostatic interactions ... β-pleated sheets ... primary sequence

QUESTION 4

The purpose of treating a protein with DTT is to ....A. cleave an amino acid sequence on the N­terminal side of Met

B. separate amino acids in an ion exchange column

C.break disulfide bridges

D.denature by destroying any nonbonding interactions

hydrolyse peptide bonds

QUESTION 5

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E.

The purpose of treating a protein with ammonium sulfate is to ....A. separate amino acids in an ion exchange column

B. denature by destroying any nonbonding interactions

C.cleave an amino acid sequence on the N­terminal side of Met

D.break disulfide bridges

E. hydrolyze peptide bonds

QUESTION 6

Which one most likely CANNOT be used to determine the N­terminal amino acid in a peptide?A. Leucineaminopeptidase

B.Chymotrypsin

C.Dansyl chloride

D.Edman's Reagent

E. Sanger's Reagent

QUESTION 7

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Which one is NOT an endopeptidase?A. Chymotrypsin

B.Pepsin

C.Carboxypeptidase B

D.Trypsin

E. Asp-N-protease

QUESTION 8

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Which will elute first from an ion exchange column packed with anionic sulfonated polystyrene using pH=6 buffer solution?Amino acids with basic side chains

QUESTION 9

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A.

B.Amino acids with acidic side chains

C.Amino acids with nonpolar side chains

D.Amino acids with polar side chains

E. Amino acids with polar neutral side chains

What are these three compounds?

 

A. 1) Ninhydrin   2) PTH of alanine   3) Sanger's Reagent

B.1) Ninhydrin   2) PTH of alanine   3) Dansyl fluoride

C.1) PITC   2) PTH of glycine   3) Sanger's Reagent

D.1) Ninhydrin   2) PTH of glycine   3) Sanger's Reagent

E. 1) Trypsin   2) Ninhydrin   3) Dansyl fluoride

QUESTION 10

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