Copper-Catalyzed Oxidative Dearomatization/Spirocyclization of Indole-2-Carboxamides: Synthesis of 2-Spiro-pseudoindoxyls
作者:Lingkai Kong、Mengdan Wang、Fangfang Zhang、Murong Xu、Yanzhong Li
DOI:10.1021/acs.orglett.6b03131
日期:2016.12.2
A copper-catalyzedoxidative dearomatization/spirocyclization of indole-2-carboxamides using tert-butyl hydroperoxide (TBHP) as the oxidant has been developed that provides rapid and efficient access to C2-spiro-pseudoindoxyls. Two of the sp2C–H bonds are functionalized during the reaction process, and the reaction likely proceeds via the formation of a highly reactive 3H-indol-3-one intermediate
Palladium-Catalyzed Dual C(sp<sup>2</sup>)–H Functionalization of Indole-2-carboxamides Involving a 1,2-Acyl Migration: A Synthesis of Indolo[3,2-<i>c</i>]quinolinones
作者:Lingkai Kong、Zhong Zheng、Rong Tang、Mengdan Wang、Yue Sun、Yanzhong Li
DOI:10.1021/acs.orglett.8b02419
日期:2018.9.21
A novel Pd/Cu catalytic system to construct indolo[3,2-c]quinolinones has been developed starting from indole-2-carboxamides, Substrates were transformed into indolo[3,2-c]quinolinones through dual C(sp(2))-H functionalization of the indole moiety and arene, in which a carbonyl 1,2-migration was involved. The corresponding products were obtained in moderate to excellent yields with a wide substrate scope.