Geminal Silicon/Zinc Reagent as an Equivalent of Difluoromethylene Bis-carbanion
摘要:
A new difluorinated reagent, [difluoro(trimethylsilyl)methyl]zinc bromide, bearing C-Zn and C-Si bonds is described. The reagent is conveniently prepared by cobalt-catalyzed halogen/zinc exchange. It can be coupled with two different C-electrophiles in a stepwise manner (with allylic halides for C-Zn bond and aldehydes for C-Si bond) affording products containing a difluoromethylene fragment.
Geminal Silicon/Zinc Reagent as an Equivalent of Difluoromethylene Bis-carbanion
作者:Mikhail D. Kosobokov、Vitalij V. Levin、Artem A. Zemtsov、Marina I. Struchkova、Alexander A. Korlyukov、Dmitry E. Arkhipov、Alexander D. Dilman
DOI:10.1021/ol5002297
日期:2014.3.7
A new difluorinated reagent, [difluoro(trimethylsilyl)methyl]zinc bromide, bearing C-Zn and C-Si bonds is described. The reagent is conveniently prepared by cobalt-catalyzed halogen/zinc exchange. It can be coupled with two different C-electrophiles in a stepwise manner (with allylic halides for C-Zn bond and aldehydes for C-Si bond) affording products containing a difluoromethylene fragment.