作者:Hu, Zi-Jun、Chen, Wei、Lyu, Xinyu、Zhang, Hui-Peng、Chen, Si-Wei、Ding, Xian-Heng、Yu, Cang-Hai、Cui, Zhen、Miao, Chun-Bao、Yang, Hai-Tao
DOI:10.1021/acs.orglett.4c01071
日期:——
A copper-catalyzed [3 + 2] annulation of O-acyl oximes with 4-sulfonamidophenols is developed. The advantage of this method lies in the concurrent double activation of two substrates to form nucleophilic enamines and electrophilic quinone monoimines. The substituent on the α-carbon of O-acyl oxime determines two different reaction pathways, thereby leading to the selective generation of 5-sulfonamidoindoles
开发了铜催化的O-酰基肟与 4-磺酰胺苯酚的 [3 + 2] 成环反应。该方法的优点在于同时双重活化两种底物,形成亲核烯胺和亲电醌单亚胺。 O-酰基肟的α-碳上的取代基决定了两种不同的反应途径,从而导致5-磺酰胺吲哚和2-酰胺基-5-磺酰胺苯并呋喃-3(2 H )-酮的选择性生成。