The synthesis of some 1-(2-aminopropyl)-2-benzyl (and 4-ethoxybenzyl) benzimidazoles is reported. A pmr study of the alkylation of 2-benzylbenzimidazole with 2-chloro-1- dimethylaminopropane shows that reactions of this type represent a practicable route to 1-(2- aminopropyl) benzimidazoles, since the 1-(2-amino-1-me