1-Methylimidazole was dissolved in CHCl3, and chloromethyl styrene (1.3 equiv) was added. After the mixture was stirred for 8 h at 50 C, the
resulting 1-methyl-3-(4-vinylbenzyl) imidazolium chloride, [MVBIM][Cl], (1) was washed with EA.
Tetrahedron Letters 45 (2004) 5827–5831
doi:10.1016/j.tetlet.2004.06.006