Synthesis of 2,3-Disubstituted <i>NH</i> Indoles via Rhodium(III)-Catalyzed C–H Activation of Arylnitrones and Coupling with Diazo Compounds
作者:Xin Guo、Jianwei Han、Yafeng Liu、Mingda Qin、Xueguo Zhang、Baohua Chen
DOI:10.1021/acs.joc.7b02105
日期:2017.11.3
arylnitrones and diazo compounds by C–H activation/[4 + 1] annulation with a C(N2)–C(acyl) bond cleavage is reported, and 2,3-disubstituted NH indoles are directly synthesized in up to a 94% yield. A variety of functional groups are applicable to this reaction to give the corresponding products with high selectivity. Compared to other previously reported Rh(III)-catalyzed synthesis of homologous series, this method
据报道,铑通过C–H活化/ [4 +1]环解和C(N 2)–C(酰基)键裂解而在芳基硝基化合物和重氮化合物之间进行了分子间偶联,并且2,3-二取代的NH吲哚是直接的合成率高达94%。多种官能团可用于该反应,以产生具有高选择性的相应产物。与其他先前报道的Rh(III)催化的同源系列合成相比,该方法更简单,更通用,更有效。