Characterization of directly acting mutagens produced from N-nitroso-N-(formylmethyl)alkylamines: Their possible involvement in the carcinogenesis of N-nitrosamines having a 2-hydroxyethyl group.
The reaction of N,N-dimethyl- or N,N-pentamethylene-formamide chlorides with n-butyl, cyclohexyl, and 2,4-xylyl isocyanides results in the formation of 1:2-adducts which are readily converted by water to N,N'-disubstituted α-(dialkylamino)malonamides. In the case of N,N-dimethylamide chlorides of acetic, propionic, and benzoic acids, the products are the corresponding N-substituted α-ketoamides resulting