作者:Zhang, Jinhui、Liu, Chao、Wu, Jiahao、Tan, Xiangwen、Wu, Wanqing、Jiang, Huanfeng
DOI:10.1021/acs.orglett.4c00880
日期:——
Catalytic cyclization via dual C–H bond activation has evolved as a powerful strategy for building bi- and polycyclic molecules. Herein, a palladium-catalyzed annulation of tertiary anilines with 3-butenoic acid via N-α-C(sp3)–H and ortho-C(sp2)–H activation is described. The remarkable characteristics of this reaction include excellent diastereoselectivity, broad substrate scope, and good tolerance
通过双 C-H 键活化的催化环化已发展成为构建双环和多环分子的强大策略。本文描述了钯催化的叔苯胺与 3-丁烯酸通过N -α-C(sp 3 )–H 和邻位-C(sp 2 )–H 活化的环化反应。该反应的显着特点包括优异的非对映选择性、广泛的底物范围以及对一些高度敏感基团的良好耐受性。此外,KIE 实验表明 C-H 键脱离并不是限制周转的步骤。