Cp*Co(III)-Catalyzed Regioselective Synthesis of Cyclopenta[<i>b</i>]carbazoles via Dual C(sp<sup>2</sup>)–H Functionalization of 1-(Pyridin-2-yl)-indoles with Diynes
作者:Qiuyun Li、Yanwei Wang、Bin Li、Baiquan Wang
DOI:10.1021/acs.orglett.8b03438
日期:2018.12.21
Cp*Co(III)-catalyzedsynthesis of cyclopenta[b]carbazoles from 1-(pyridin-2-yl)-indoles and diynes is developed. This reaction involves dual C–H activation of indoles and domino cyclizations with diynes and has excellent regioselectivity, high efficiency, a broad substrate scope, and tolerance for various functional groups. A series of cyclopenta[b]carbazole molecular scaffolds are obtained in good
开发了Cp * Co(III)催化的1-(吡啶-2-基)-吲哚和二炔合成环戊[ b ]咔唑的方法。该反应涉及吲哚的双重C–H活化和带有二炔的多米诺环化反应,具有出色的区域选择性,高效率,广泛的底物范围以及对各种官能团的耐受性。以良好或优异的产率获得了一系列环戊[ b ]咔唑分子支架。
Rh(III)-Catalyzed Double C–H Functionalization of Indoles with Cyclopropenones via Sequential C–H/C–C/C–H Bond Activation
作者:Yan-Bo Zhang、Bin-Shi Li、Guo-Jie Xu、Wei Sun、Meng Sun
DOI:10.1021/acs.orglett.3c01292
日期:2023.6.2
An unprecedented Rh(III)-catalyzed double C–H functionalization of indoles with cyclopropenones via sequential C–H/C–C/C–H bond activation has been developed. This procedure represents the first example for assembling of cyclopenta[b]indoles utilizing cyclopropenones as 3C synthons. This powerful approach shows excellent chemo- and regioselectivity, wide functional group tolerance, and good reaction