A series of 3-cyanomethylimidazo[1,2-a]pyridine derivatives ( 4 ) have been synthesized by using a novel method of utilizing ethylchloroformate as alkylating agent for making quaternary ammonium salts (7) from 3- (dimethylamino)methyl imidazo[1,2-a]pyridines (6) followed by cyanation. This method is hitherto unknown in the literature and the process is elegant and simple with excellent yields.
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