It has been reportedla that the reaction of primary aliphatic amines and aniline with N-methyl- N-nitroso-N'4troguanidine gives N-alkyl-and N-phenyl-N'-nitroguanidines. Since this was the first description of a method of producing N-aryl-N l-nitroguanidines this reaction was investigated more fully. The compounds prepared along with their physical properties are listed in Table I. In general primary amines react with N-alkyl-N-nitroso-N'-nitroguanidines ...