Thermal decomposition of the diazirines. Part II. 3,3-Tetramethylenediazirine, 3,3-pentamethylenediazirine, and 3,3-diethyldiazirine

Abstract

Thermal decomposition of 3,3-tetramethylenediazirine, investigated in the temperature range 100–139°, yields cyclopentene and nitrogen; of 3,3-pentamethylenediazirine (101–137°) gives cyclohexene and nitrogen; of 3,3-diethyldiazirine (118–149°) gives cis- and trans-pent-2-ene, ethylcyclopropane, and nitrogen. In all cases the reactions were homogeneous and of first order. The Arrhenius parameters for these decompositions, which are probably unimolecular, have been determined.