GaCl<sub>3</sub>-Catalyzed C–H Cyanation of Indoles with <i>N</i>-Cyanosuccinimide
作者:Xue Wang、Mohamed Makha、Shu-Wei Chen、Huaiji Zheng、Yuehui Li
DOI:10.1021/acs.joc.9b00416
日期:2019.5.17
An efficient GaCl3-catalyzed direct cyanation of indoles and pyrroles using bench-stable electrophilic cyanating agent N-cyanosuccinimide was achieved and afforded 3-cyanoindoles and 2-cyanopyrroles in good yields and excellent regioselectivities. Notably, this protocol exhibited high reactivity for unprotected indoles and was applicable to a broad range of indole and pyrrole substrates.
获得了使用台式稳定的亲电氰化剂N-氰基琥珀酰亚胺有效地GaCl 3催化的吲哚和吡咯直接氰化,并以良好的收率和优异的区域选择性提供了3-氰基吲哚和2-氰基吡咯。值得注意的是,该方案对未保护的吲哚表现出高反应性,并且适用于多种吲哚和吡咯底物。