Ethylenediamine: A Highly Effective Catalyst for One-Pot Synthesis of Aryl Nitroalkenes via Henry Reaction and Dehydration
作者:Jianxin Yang、Jing Dong、Xia Lü、Qiang Zhang、Wei Ding、Xiaoxin Shi
DOI:10.1002/cjoc.201201094
日期:2012.12
Ethylenediamine (H2NCH2CH2NH2) was found to be a highlyeffectivecatalyst for the condensation of aryl aldehydes with nitromethane (or nitroethane). When 1%–2% (mol%) of ethylenediamine was used as the catalyst, the one‐pot reaction of aryl aldehydes with nitromethane (or nitroethane) by refluxing for 3–10 h efficiently afforded various arylnitroalkenes 1a–1y in 85%–97% yields.