Kinetics of thermal decomposition of n-alkyl-n′-methoxydiazene-n-oxides in the gas phase

Conclusions The kinetics of the thermal decomposition of N-methyl-, N-t-butyl-, and N-neopentyl-N-methoxydiazene-N-oxides have been studied in the gas phase. The reactions are first order with activation parameters: E 204, 148, and 206 kJ/mole, log(A/sec^–1) 14.5, 13.3, and 14.6, respectively. A mechanism has been proposed for the decomposition of the MeN- and t-BuCH₂N-derivatives by the primary homolytic rupture of the N-OMe bond, and in the case of the t-BuN-analog, via a five-membered cyclic transition state with migration of a -H to the N atom.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1506–1509, July, 1988.