P2O5 Promoted One-Pot Synthesis of 3-aminoimidazo[1,2-a]pyridines under Solvent-Free Conditions
作者:Ebrahim Soleimani、Mojtaba Taran、Mohsen Zainali、Shahram Lotfi
DOI:10.2174/157017812800167411
日期:2012.3.1
A facile, efficient and environment-friendly protocol for the synthesis of 3-aminoimidazo[1,2-a]pyridines has been developed by one-pot condensation of 2-aminopyridine, aromatic aldehyde and alkyl or aryl isocyanide in the presence of P2O5 as catalyst under solvent-free conditions at room temperature. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield, easy purification, and economic availability of the catalyst.
一种简便、高效且环保的合成3-氨基咪唑[1,2-a]吡啶的方案已被开发,该方法在室温下无溶剂条件下,通过2-氨基吡啶、芳香醛和烷基或芳基异氰酸酯在P2O5催化剂存在下一次性缩合而成。该方法具有反应清洁、操作简单、反应时间短、产率高、易于纯化以及催化剂经济易得等优点。