An Efficient Synthesis of 2-Vinylbenzimidazoles from 1-(2-Benzimidazole-2-ylethyl)pyridinium Salts Using an Anion-Exchange Resin
Transformation of several 1-(2-benzimidazol-2-ylethyl)pyridinium salts, obtained by two different procedures, into their corresponding 2-vinylbenzimidazoles either using an anion-exchange resin (OH- form) or in the solid state is described.This approach now allows a facile entry into the almost unknown 2-vinylbenzimidazole monomers.