2- or 3-Alkenenitriles, (R1R2HC)R3C=CHCN or R1R2C=CR3CH2CN (R1, R2, R3 = H, Me, etc.), react with iodosilanes, R4Me2SiI (R4 = Me, Me3Si), in the presence of Et3N to give 2-silyl-2-alkenenitriles, (R1R2HC)R3C=C(SiMe2R4)(CN), in good to moderate yields with high E selectivity (R3 = H). A 2-methylalkenenitrile, H2C=CHCHMe(CN) or MeCH=CMe(CN), is silylated with Me3SiI to provide a 4-silyl-2-alkenenitrile, Me3SiCH2CH=CMe(CN).
2-或3-
烯腈,(R1R2HC)R3C=CHCN或R1R2C=CR3CH2CN(R1,R2,R3 = H,Me等),在Et3N的存在下与
碘硅烷R4Me2SiI(R4 = Me,Me3Si)反应,生成2-
硅基-2-
烯腈,(R1R2HC)R3C=C(SiMe2R4)(CN),产率良好到中等,且具有高E选择性(R3 = H)。一种
2-甲基烯腈H2C=CHCHMe(CN)或MeCH=CMe(CN)与Me3SiI反应,生成4-
硅基-2-
烯腈Me3SiCH2CH=CMe(CN)。