Synthesis of Hydrazines via Radical Generation and Addition of Azocarboxylic <i>tert</i>-Butyl Esters
作者:Chen-Hao Ru、Shi-Huan Guo、Gao-Fei Pan、Xue-Qing Zhu、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1021/acs.orglett.8b00448
日期:2018.4.6
A new chemistry of azo compounds that is a radical generation and addition in situ of azocarboxylic tert-butyl esters to synthesize hydrazines has been described. The protocol provides a novel strategy for the synthesis of various hydrazines. The advantages of the transformation include broad substrate scope, benign conditions, and convenient operation.
Rhodium-Catalyzed Redox-Neutral Olefination of Aryldiazenes with Acrylate Esters via C–H Activation and Transfer Hydrogenation
作者:Xiaofei Zhang、Bin Zhang、Xingwei Li
DOI:10.1021/acs.orglett.1c00107
日期:2021.3.5
Rh(III)-catalyzed redox-neutral C–H olefination of aryldiazenecarboxylates has been realized using arylate esters as the olefinating reagents. This reaction proceeds under mild and redox-neutral conditions, resulting in integration of C–Hactivation and transferhydrogenation. The chemoselectivity complements that of previously reported rhodium-catalyzed coupling of the same substrates.