in the presence of Au-catalyst has been developed. The cascade transformation proceeds via alkyne-vinylidene isomerization with concomitant 1,2-shift of hydrogen, silyl, and stannyl groups. Remarkably, it was also shown that previously unknown 1,2-migration of a germyl group upon alkyne-vinylidene rearrangement occurs under these reaction conditions. This method allows for mild and efficient synthesis
已开发出一种在 Au 催化剂存在下从各种炔丙基取代的杂环合成稠合
吡咯杂环的有效方法。级联转化通过
炔烃-亚
乙烯基异构化进行,伴随着氢、甲
硅烷基和甲
硅烷基的 1,2-位移。值得注意的是,还表明,在这些反应条件下,炔-亚
乙烯基重排发生了以前未知的
锗烷基的 1,2-迁移。这种方法可以温和有效地合成各种 C-2 取代的含 N 杂环。