Base-Catalyzed Hydrophosphination of Azobenzenes with Diarylphosphine Oxides: A Precise Construction of N-N-P Unit
作者:Gang Hong、Xiaoyan Zhu、Chen Hu、Alfred Njasotapher Aruma、Shengying Wu、Limin Wang
DOI:10.1021/acs.joc.6b01210
日期:2016.8.5
Addition of diarylphosphine oxides to the N═N double bond of azobenzenes leads to the formation of the P-substituted hydrazines in up to 98% yield for 24 examples, and the formation of diphenylphosphinic amides was observed in three substrates. This strategy features tolerance of a wide range of functional groups, simple operation, and mild reaction conditions. Specially, this method can be also applied
<i>N</i>,<i>N</i>-Diisopropylethylamine-Mediated Electrochemical Reduction of Azobenzenes in Dichloromethane
作者:Hongyan Zhou、Rundong Fan、Jingya Yang、Ximei Sun、Xiaojun Liu、Xi-Cun Wang
DOI:10.1021/acs.joc.2c01949
日期:2022.11.4
report a cathodic reduction-dominated electrochemical approach for the hydrogenation of azobenzenes in dichloromethane. With cheap and readily available N,N-diisopropylethylamine as a catalytic mediator, the reaction proceeded smoothly in a simple undivided cell under constant-current electrolysis. A series of azobenzenes were successfully reduced to the corresponding hydrazobenzenes in moderate to high