Elimination and addition reactions. Part XXVII. Addition of amides to electrophilic alkenes
作者:John W. Batty、Peter D. Howes、Charles J. M. Stirling
DOI:10.1039/p19760001543
日期:——
Treatment of amides from primary amines with strong bases and electrophilic alkenes (acrylonitrile or p-tolyl vinyl sulphone) gives products derived from N-alkylation of the amide. When amides without an N–H bond are used, no reaction occurs unless the amide gives a stabilised carbanion on proton abstraction; C-alkylation then occurs. When N- and C-alkylation can compete, N-alkylation is preferred
用强碱和亲电烯烃(丙烯腈或对甲苯基乙烯基砜)处理来自伯胺的酰胺,可得自酰胺的N-烷基化反应的产物。当使用不带有NH键的酰胺时,除非酰胺对质子提取具有稳定的碳负离子,否则不会发生任何反应。然后发生C-烷基化。当N-和C-烷基化可以竞争时,N-烷基化是优选的。