Ethylenediamine promoted the hydrogenative coupling of nitroarenes over Ni/C catalyst

作     者：Youdi Yang Shaopeng Li Chao Xie Hangyu Liu Yanyan Wang Qingqing Mei Huizhen Liu Buxing Han 

作者机构：Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2019年第30卷第1期

页      面：203-206页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China (No. 21603235) the Recruitment Program of Global Youth Experts of China 

主　　题：Selective hydrogenation Non-noble metal catalyst Electronic state Azobenzene Organic modifiers 

摘      要：Azobenzene and its derivatives are key raw materials and it is an environmentally friendly method for the preparation of azobenzene by hydrogenative coupling of nitrobenzene. The development of nickel based catalyst for organic transformations is of importance because of its relatively low cost and toxicity. In this work, we found that ethylenediamine can enrich the electron state of Ni and make the azobenzene easily desorb from the surface of the catalyst, which inhibits the hydrogenation of azobenzene to aniline. The selectivity of azobenzene is greatly improved. When the ratio of Ni and ethylenediamine is 1:10, the yield of the azobenzene can reach 95.5%.