Practical and Efficient Synthesis of (<i>E</i>)-α,β-Unsaturated Amides Bearing (<i>S</i>)-α-Methylbenzylamine from 2-Phosphonamides via Horner-Wadsworth-Emmons Reaction
作者:Mario Ordóñez、Eugenio Hernández-Fernández、Mario Fernández-Zertuche、Oscar García-Barradas、Omar Muñoz-Muñiz
DOI:10.1055/s-2006-926265
日期:——
The highly stereoselective synthesis of (E)-α,β-unsaturated amides bearing (S)-α-methylbenzylamine was achieved from 2-phosphonamides via Horner-Wadsworth-Emmons reaction. The starting phosphonamides are easily prepared in two steps with excellent yields via the standard Arbuzov reaction of trimethylphosphite and α-bromoamides.
通过Horner-Wadsworth-Emmons反应成功合成了高度立体选择性的(E)-α,β-不饱和酰胺,这些酰胺具有(S)-α-甲基苄胺。起始的膦酰胺可通过三甲基膦酸酯与α-溴酰胺的标准Arbuzov反应在两步中以优异的产率轻松制备。