Room temperature ionic liquid promoted improved and rapid synthesis of 2,4,5-triaryl imidazoles from aryl aldehydes and 1,2-diketones or α-hydroxyketone
作者:Shapi A. Siddiqui、Umesh C. Narkhede、Sanjay S. Palimkar、Thomas Daniel、Rajgopal J. Lahoti、Kumar V. Srinivasan
DOI:10.1016/j.tet.2005.01.116
日期:2005.4
An improved and rapid one-pot synthesis of 2,4,5-triaryl imidazoles in a roomtemperatureionicliquid is described, which does not need any added catalyst. Different ionicliquids based on 1-n-butyl and 1,3-di-n-butyl imidazolium salts were screened and their efficacy in terms of acidity and polarity have been correlated with yields and reaction period. The one-pot methodology resulting in excellent