microwave chemistry in silicon carbide reaction vials: separating thermal from nonthermal effects
DESCRIPTION
Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects. Figure. Heating rates for 3 mL samples of hexane (tand=0.02) ,[3] MeCN (tand=0.062) ,[3] EtOH (tand=0.941), [3] and 1-butyl-3-methylimidazolium - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/1.jpg)
Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects
![Page 2: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/2.jpg)
![Page 3: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/3.jpg)
Figure. Heating rates for 3 mL samples of hexane (tand=0.02),[3]
MeCN (tand=0.062),[3] EtOH (tand=0.941),[3] and 1-butyl-3-methylimidazoliumhexafluorophosphate ([bmim]PF6, tand>1)[8] at 130 Wconstant magnetron power in a 10 mL Pyrex vial (a), and in a custom-madeSiC vial (b). Single-mode microwave irradiation, magneticstirring, internal fiber-optic temperature measurement.[6]
![Page 4: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/4.jpg)
Figure. Comparison of heating rates for 3 mL samples of hexane (tan δ = 0.02), MeCN (tan δ =0.062),EtOH (tan δ = 0.941), and bmimPF6, tan δ >1) at 130 W constant microwave power in Pyrex and SiC vials. Single-mode microwave irradiation, magnetic stirring, internal fiber-optic temperature measurement (Monowave 300).
![Page 5: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/5.jpg)
![Page 6: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/6.jpg)
![Page 7: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/7.jpg)
![Page 8: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/8.jpg)
Figure. Internal fiber-optic temperature profiles for the solvent-freesynthesis of the ionic liquid [bmim]Br using Pyrex and SiC reactionvials. Experiments were performed using an IR-controlled set temperatureof 1008C on a 10.6 mmol scale (1.02 equiv of BuBr)
![Page 9: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/9.jpg)
a) Mizoroki-Heck reaction
b) Alkylation of PPh3
c) Newman-Kwart
d) Claisen rearrangement
![Page 10: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/10.jpg)
![Page 11: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/11.jpg)
Newmqn-Kwart rearrangment
![Page 12: Microwave Chemistry in Silicon Carbide Reaction Vials: Separating Thermal from Nonthermal Effects](https://reader034.vdocument.in/reader034/viewer/2022051401/56814aad550346895db7c157/html5/thumbnails/12.jpg)
Claisen rearrangment