Nafion–Fe: A New Efficient “Green” Lewis Acid Catalyst for the Ketonic Strecker Reaction
作者:G. K. Surya Prakash、Inessa Bychinskaya、Eric R. Marinez、Thomas Mathew、George A. Olah
DOI:10.1007/s10562-012-0958-2
日期:2013.4
yields and high purity by the Strecker reaction from ketones, aliphatic/aromatic amines and TMSCN using a new “green” Lewis acid catalyst, Nafion–Fe (iron Nafionate, Fe(III) salt of Nafion–H, a solid polymeric perfluoroalkanesulfonic acid) under conventional thermal as well as microwave conditions. Microwave and solvent-free conditions applied in this method shorten the reaction times, improve the yields
使用新的“绿色”路易斯酸催化剂 Nafion,通过从酮、脂肪族/芳香族胺和 TMSCN 的 Strecker 反应,以中等至高产率和高纯度合成各种 α-氨基腈,α-氨基酸的前体–Fe(Nafionate 铁,Nafion-H 的 Fe(III) 盐,一种固体聚合全氟烷磺酸)在常规热和微波条件下。该方法中应用的微波和无溶剂条件缩短了反应时间,提高了产率并减少了副产物的形成。Strecker 反应与脂族仲胺在这些条件下也能顺利发生,这在常规条件下并不常见。 图形摘要