Jj. Vandeneynde et al., AN EXPEDIENT ROUTE TO 1H-BENZIMIDAZOLES AND 1H-IMIDAZOPYRIDINES, Bulletin des Societes chimiques belges, 102(5), 1993, pp. 357-364
1H-Benzimidazoles, 1H-imidazo[4,5-b]pyridines, and 1H-imidazo[4,5-c]-p
yridines can be synthesized readily by reaction of unisolated N-(1-chl
oro-alkyl)pyridinium chlorides with 1,2-benzenediamines, 2,3-pyridined
iamine, and 3,4-pyridinediamine respectively.