作者:Cheng, Zhangru、Chen, Jiadong、Zhang, Yulu、Shao, Ying、Sun, Jiangtao、Tang, Shengbiao
DOI:10.1021/acs.orglett.4c01279
日期:——
2,3-Indole-fused 1,4-diazocines represent a new family of indole alkaloid compounds and are difficult to access by the reported protocols. Herein, we report a copper-catalyzed decarboxylative cyclization of cyclic propargylic carbamates with imidazolidines via sequential C–N/C–N/C–C bond formation to deliver a series of 2,3-indole-fused 1,4-diazocines, with a broad substrate scope and mild conditions
2,3-吲哚稠合 1,4-重氮辛代表了一个新的吲哚生物碱化合物家族,很难通过报道的方案获得。在此,我们报道了环状炔丙基氨基甲酸酯与咪唑烷通过连续 C-N/C-N/C-C 键形成的铜催化脱羧环化,产生一系列 2,3-吲哚稠合 1,4-二氮嗪,底物范围广,条件温和。