Triethanolammonium Acetate ([TEAH][OAc]) as a Recyclable Promoter and Medium for Green and Four-component Synthesis of Polyfunctionalized Pyrrole Derivatives
作者:Behjat Pouramiri、Milad Daneshi、Fatemeh Seyedi、Najmeh Amirmahani
DOI:10.2174/1570178617999200611150616
日期:2021.3
Multi-component synthesis of functionalized pyrrole derivatives was achieved via a fourcomponent condensation reaction of ethyl acetoacetate/ methyl acetoacetate, aromatic amines, nitromethane, and aromatic aldehydes using triethanolammonium acetate ([TEAH][OAc]) ionic liquid as a green solvent and catalyst. Easy access to highly substituted pyrroles, reusability of the catalyst, broad substrate scopes
使用乙酸三乙醇铵([TEAH] [OAc])离子液体作为绿色溶剂和催化剂,通过乙酰乙酸乙酯/乙酰乙酸甲酯,芳香胺,硝基甲烷和芳香醛的四组分缩合反应,可以实现功能化吡咯衍生物的多组分合成。易于获得高度取代的吡咯,催化剂的可重复使用性,较宽的底物范围,无柱色谱法,反应时间短,产物收率高和无溶剂条件,使得该方案对环境友好且实用。