N-Alkyl(or aryl)-2-(pyrrol-1-yl)benzaldimines, derived from 2-(pyrrol-1-yl)benzaldehydes and primary amines, were treated with aromatic and aliphatic isocyanides in the presence of a catalytic amount of boron trifluoride diethyl etherate to afford the corresponding 4,5-diaminopyrrolo[1,2-a]quinoline derivatives in generally fair to good yields.