- Utility of silicon tetrafluoride as a catalyst of reactions with xenon difluoride: Fluorinations of phenyl alkenes and benzaldehydes
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Application of silicon tetrafluoride to fluorinations with xenon difluoride as a catalyst is investigated. It was found that vic-difluorination of phenyl alkenes and transformation of benzaldehydes to difluoromethoxybenzenes using xenon difluoride are enhanced by silicon tetrafluoride.
- Tamura, Masanori,Takagi, Toshiyuki,Quan, Heng-Dao,Sekiya, Akira
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p. 163 - 166
(2007/10/03)
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- N-Fluorobisimides: Reactions with Some Olefins via α-Fluoro Carbocationic Intermediates
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N-Fluorobisimides are a new class of electrophilic fluorinating agents.Reaction of (CF3SO2)2NF (1) with olefins gave various products, depending on the reaction conditions and the structure of the substrate.In solvents of higher nucleophilicity such as H2O, acetic acid, aqueous HCl, and (HF)nPy, α-fluorohydrins and their acetates, α,β-chlorofluoro- and α,β-difluoroalkanes were obtained.In acetic acid, trans-stilbene and tetraphenylethylene produced the rearranged, nonfluorinated aldehyde and ketone.Evidence is presented for the reactions proceeding via a one-electron transfer mechanism involving α-fluorocarbocationic intermediates.
- DesMarteau, Darryl D.,Xu, Ze-Qi,Witz, Michael
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p. 629 - 635
(2007/10/02)
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- FLUORINATION WITH CAESIUM FLUOROXYSULPHATE. ROOM TEMPERATURE FLUORINATION OF PHENYL SUBSTITUTED OLEFINS
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Room -temperature fluorination of 1,1-diphenylethene with caesium fluoroxysulphate in methylene chloride resulted in an addition elimination process, thus yielding 1,1-diphenyl-2-fluoroethene, while in the presence of nucleophile containing species, i.e.,
- Stavber, Stojan,Zupan, Marko
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p. 5035 - 5044
(2007/10/02)
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