organic chemistry
DESCRIPTION
Faculty of Allied Medical Sciences. Organic chemistry. ( MGOC-101). Sulphonic acid. Supervision: Prof.Dr.Shehata El-Sewedy Dr. Fatma Ahmed Mahmoud. Outcomes. By the end of this lecture, the students will be able to. 1-known nomenclature of Sulphonic acid - PowerPoint PPT PresentationTRANSCRIPT
Organic chemistry
Faculty of Allied Medical Sciences
(MGOC-101)
Supervision:Prof.Dr.Shehata El-Sewedy
Dr. Fatma Ahmed Mahmoud
OutcomesBy the end of this lecture, the students will be
able to1-known nomenclature of Sulphonic
acid2-learn preparation of Sulphonic acid
3-Recognize reactions of Sulphonic acid
Nomenclatures
SO3H
benzenesulfonic acid
SO3H
CH3
4-methylbenzenesulfonic acid
SO3HBr
2-bromobenzenesulfonic acid
The order of acidity for sulphonic acid Sulphonic acids are more acidic than carboxylic acids
S
O
O
OHAr C
O
Ar OH
More acidic
Acidity depends on release of proton and production of anion. As the stability of the anion increase acidity increase .
S
O
O
OAr C
O
Ar O
More acidic Because sulphonate anion has negative charge is delocalizedon 3 oxygen atoms
less acidic Because carboxylate anion has negative charge is delocalizedon 2 oxygen atoms only.
Preparation of benzenesulphonic acid
H2SO4/80 COr oleum/r.t
Oleum200 C
SO3H SO3H
SO3H
benzene-1,3-disulfonic acidbenzenesulfonic acid
Reaction of benzenesulphonic acidSO3H SO3Na
benzenesulfonic acid
dil NaOH
Sulphonate salt
SO3H OH
benzenesulfonic acid
NaOH
phenol
SO3H SO2Cl
benzenesulfonic acid
PCl3 or PCl5
benzenesulfonyl chloride
SO3H
benzenesulfonic acid
dil HCl/150 C
benzene
SO3H
benzenesulfonic acid aniline
NaNH2
NH2
SO3H
benzenesulfonic acid benzonitrile
KCN
CN
Quiz time
ConvertBenzene Benzene
How to prepare the following compounds?
Benzene
benzenesulfonic acid benzonitrile
benzene-1,3-disulfonic acidaniline
Student Question
Complete:SO3H
dil NaOH ...................
SO3H
NaOH ..................
dil HCl/150 C..................
ConvertBenzene Benzene
How to prepare the following compounds?
Benzene
benzenesulfonic acid benzonitrile
benzene-1,3-disulfonic acidaniline
AssignmentsGroup A and Group B
Mahmoud Mohamad- Amir Mohamad- Mervat Abd El-Halim- Mervat Essam – Yasmine Rabee
Applications of Alkynes
Aya Salah- Omnia Gamal- Hanan Farg-Sarah Fasal Hashem
Application of Alkenes in plastic synthesis
Mana Allah Gamal- Malak Atef-Yasmine Abd ElHameed
carbocations
Haidy Adel- Ali HassanHossam Hassan- Yehia HamdyYoussef Ali
Effect of Benzene on human Health
Recommended textbooks:1-Raymond Chang. Chemistry: An introduction to organic chemistry. 10th ed. 2009 2008
2-Zumdehl. Organic Chemistry; study guide and solution manual. 2008
3-Chemistry: An introduction to organic Organic Chemistry Aromatic Chemistry Carbohydrates: The essential molecules of life