Internal redox amidation of α,β-unsaturated aldehydes in ionic liquids. The electrochemical route
作者:Marta Feroci、Isabella Chiarotto、Achille Inesi
DOI:10.1016/j.electacta.2012.11.061
日期:2013.2
A simple, N-heterocyclic carbene (NHC) activated synthesis of amides has been performed via electrolysis, carried out under galvanostatic control, of an ionic liquid (Bmim-BF4) followed by addition to the catholyte of an α,β-unsaturated aldehyde and amine. Amides have been isolated, in good to elevated yields, in the absence of any base, co-catalyst and organic solvent. The selectivity of amidation
通过在恒电流控制下对离子液体(Bmim-BF 4)进行电解,然后将其添加到α,β-不饱和醛的阴极液中,进行了简单的N-杂环卡宾(NHC)活化的酰胺合成和胺。在没有任何碱,助催化剂和有机溶剂的情况下,已分离出酰胺,提高了收率,提高了收率。酰胺化的选择性相对于副产物亚胺的形成已与电生成的NHC /醛的摩尔比有关。使用离子液体和电化学方法获得的结果已与使用有机溶剂和经典方法获得的结果进行了比较。