Brønsted Acidic Ionic Liquid as an Efficient and Reusable Catalyst for One-Pot, Three-Component Synthesis of Pyrimidinone Derivatives via Biginelli-Type Reaction Under Solvent-Free Conditions
作者:Abdol R. Hajipour、Yosof Ghayeb、Nafisehsadat Sheikhan、Arnold E. Ruoho
DOI:10.1080/00397911.2010.501474
日期:2011.8
cyclopentanone and urea or thiourea in the presence of N-(4-sulfonic acid) butyl triethyl ammonium hydrogen sulfate ([TEBSA][HSO4]) as the Brønstedacidicionicliquid and effective catalyst under thermal and solvent-free conditions. Good yields, short reaction times, straightforward workup, reusability of the catalyst, and green conditions are the most obvious advantages of this procedure.