synthesized from 7- to 9-membered lactams and 6- to 9-membered lactams via N,O-acetal trimethylsilyl (TMS) ethers. Organocopper and organostannane reagents afforded reasonable yields for the respective N-acyliminium ion vinylation and acetylenylation intermediates generated from N,O-acetal TMS ethers in the presence of a Lewis acid.
可以通过N,O-
缩醛三甲基甲
硅烷基(TMS)醚轻松地从7至9元内酰胺和6至9元内酰胺合成α-
乙烯基或α-
乙炔基氮杂环。
有机铜和
有机锡烷试剂为由
路易斯酸存在下的N,O-
缩醛TMS醚生成的各个N-酰基
亚胺离子
乙烯基化和
乙炔基化中间体提供了合理的收率。