An Efficient Combined Electrochemical and Ultrasound Assisted Synthesis of Imidazole-2-Thiones
作者:Marta Feroci、Monica Orsini、Achille Inesi
DOI:10.1002/adsc.200900359
日期:2009.9
The electrochemical reduction of 1,3-dialkylimidazolium ionic liquids gave the corresponding N-heterocyclic carbenes that, after reaction with elemental sulfur and ultrasound irradiation, yielded 1,3-dialkylimidazole-2-thiones in very high yields. The reaction is very clean, produces no side-products and avoids the use of any other added reagent.