KO<sup><i>t</i></sup>Bu Mediated Synthesis of Phenanthridinones and Dibenzoazepinones
作者:Bhagat Singh Bhakuni、Amit Kumar、Shah Jaimin Balkrishna、Javeed Ahmed Sheikh、Sanjit Konar、Sangit Kumar
DOI:10.1021/ol301077y
日期:2012.6.1
Synthesis of substituted phenanthridinones and dibenzoazepinones has been realized from 2-halo-benzamides in the presence of potassium tert-butoxide and a catalytic amount of 1,10-phenanthroline or AIBN. This new carbon–carbon bond forming reaction gives direct access to various biaryl lactams containing six- and seven-membered rings chemoselectively. Carbon–carbon coupling seems to proceed by the generation
Rhodium(I)-Catalyzed Aryl C–H Carboxylation of 2-Arylanilines with CO<sub>2</sub>
作者:Yuzhen Gao、Zhihua Cai、Shangda Li、Gang Li
DOI:10.1021/acs.orglett.9b01105
日期:2019.5.17
An unprecedented Rh(I)-catalyzed, amino-group-assisted C–H carboxylation of 2-arylanilines with CO2 under redox-neutral conditions has been developed. This reaction was promoted by a phosphine ligand with t-BuOK as the base and did not require the use of additional strong organometallic reagent. It enabled an efficient direct conversion of a broad range of 2-(hetero)arylanilines including electron-deficient