The first preparation of the α-iodo-β,β-difluorovinylzinc reagent (CF2CIZnCl) and a high-yield one-pot synthesis of α-iodo-β,β-difluorostyrenes
作者:R. Anilkumar、Donald J. Burton
DOI:10.1016/j.jfluchem.2004.10.006
日期:2005.4
The α-iodo-β,β-difluorovinylzinc reagent (CF2CIZnCl) was synthesized in >87% yield via room-temperature metallation of the commercially available CF3CH2I with LDA in the presence of ZnCl2. This novel zinc reagent upon palladium-catalyzed cross-coupling with aryl iodides produced α-iodo-β,β-trifluorostyrenes (ArCICF2) in 62–80% isolated yield.
通过在ZnCl 2的存在下用LDA在室温下对CF 3 CH 2 I进行室温金属化,以> 87%的产率合成了α-碘-β,β-二氟乙烯基锌试剂(CF 2 CIZnCl)。这种新颖的锌试剂在钯催化下与芳基碘化物交叉偶联,可产生α-碘-β,β-三氟苯乙烯(ArCICF 2),分离产率为62-80%。