A Novel Method for the Synthesis of α,β-Unsaturated Amides Mediated by Samarium Diiodide
作者:Chun-Lan Zhu、Xia-Xia Wang
DOI:10.1002/jccs.200500133
日期:2005.10
Promoted by Samarium diiodide (SmI 2 ), α,β-unsaturated amides were formed from nitrogen anions (formed in situ by the reduction of nitro compounds) and α,β-unsaturated esters. This reaction contrasts with the conjugate addition between amines and α,β-unsaturated esters promoted by samarium triiodide (SmI 3 ) and provides an alternative attractive way to obtain α,β-unsaturated amides using SmI 2 .
在二碘化钐(SmI 2 )的促进下,由氮阴离子(通过硝基化合物的还原原位形成)和α,β-不饱和酯形成α,β-不饱和酰胺。该反应与由三碘化钐 (SmI 3 ) 促进的胺和 α,β-不饱和酯之间的共轭加成形成对比,并提供了一种使用 SmI 2 获得 α,β-不饱和酰胺的替代方法。