Identification of the pyrolysis products of some aromatic amines using microwave spectroscopy

Abstract

The pyrolysis products of some aromatic amines have been identified using microwave spectroscopy. Aniline is found to produce 1-cyanocyclopenta-1,3-diene, N-methylaniline a mixture of 1-cyanocy-clopenta-1,3-diene and benzonitrile, N,N-dimethylaniline produces benzonitrile, and N,N-dimethylpyridine-2-amine produces pyridine. In the pyrolysis of N-methylaniline the proportion of 1-cyanocyclopenta-1,3-diene to benzonitrile is estimated to be 4 : 1 from the integrated relative intensities of the low-resolution microwave band spectra of the two substances.