作者:Sharma, Akashdeep、Vaid, Himani、Kotwal, Riya、Mughal, Zuhaib N.、Gurubrahamam, Ramani
DOI:10.1021/acs.orglett.4c01345
日期:——
The first insertion of an alkynyl carbene into N–H bonds under Rh-catalysis is developed. Alkynyl hydrazone carboxylates are used as donor–acceptor carbene precursors and are exquisitely inserted into the N–H bonds of various amines, amides, and 1,2-diamines. A wide variety of 3-alkynyl 3,4-dihydroquinoxalin-2(1H)-ones and densely functionalized α-alkynyl α-amino esters are obtained in good to excellent
首次在 Rh 催化下将炔基卡宾插入 N-H 键。炔基腙羧酸盐用作供体-受体卡宾前体,并巧妙地插入各种胺、酰胺和 1,2-二胺的 N-H 键中。以良好至优异的产率获得了多种3-炔基3,4-二氢喹喔啉-2(1 H )-酮和密集官能化的α-炔基α-氨基酯。此外,还展示了化学选择性 N-H 插入反应、机理研究以及用于获得有价值的杂环的各种合成转化。