Bis(trichloroacetimidoyloxymethyl)cyclopropanes provide intramolecular amination products of intermediate cyclobutyl or cyclopropylmethyl carbenium ion when exposed to Lewis acid catalyst or thermal ionization. The ratio of the two amination products of cyclobutyl carbenium ion depends primarily on the substituent at the alkoxymethyl group of the substrate and can be altered by the solvent used and