Mass-spectral behavior of substituted 2-alkylaminobenzoxazoles and 3-methyl-2-alkyliminobenzoxazolines

Schemes that reflect the peculiarities of each of the investigated groups of compounds and make it possible to distinguish the amino and imino forms are given on the basis of a study of the dissociative ionization processes of 18 2-alkyl(dialkyl)-aminobenzoxazoles and six 3-methyl-2-alkyliminobenzoxazolines. A qualitative relationship between the electronic properties of the substituents in the aromatic ring and the formation of the imino forms of the molecular ions in the gas phase was found.Deceased.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 304–308, March, 1981.