A novel synthesis of functionalized 1,1-difluoro-1-alkenes via isolable 2,2-difluorovinylsilanes
作者:Junji Ichikawa、Yuichiro Ishibashi、Hiroki Fukui
DOI:10.1016/s0040-4039(02)02652-7
日期:2003.1
Various 1,1-difluoro-1-alkenes such as monosubstituted 1,1-difluoro-1-alkenes, 2-bromo-1,1-difluoro-1-alkenes, and 1,1-difluoro-3-hydroxy-1-alkenes are prepared in two simple steps from 1-trifluoromethylvinylsilane: (i) its SN2′ reaction with nucleophiles to construct 2,2-difluorovinylsilanes and (ii) the subsequent substitution of electrophiles for the vinylic silyl group.
各种1,1-二氟-1-烯烃,例如单取代的1,1-二氟-1-烯烃,2-溴-1,1-二氟-1-烯烃和1,1-二氟-3-羟基-1-从1-三氟甲基乙烯基硅烷通过两个简单的步骤制备烯烃:(i)S N 2'与亲核试剂的反应以构建2,2-二氟乙烯基硅烷,以及(ii)随后用亲电试剂取代乙烯基甲硅烷基。