Gas-phase thermolysis of allyl propargyl amine, allyl cyanomethyl propargyl amine, allyl propargyl 2-thiapropyl amine, and allyl methanesulfonyl propargyl amine

Article abstract of DOI:10.1002/kin.550260409

The title amines have been pyrolyzed in a stirred-flow reactor, at temperature of 360-500°C, pressures of 7-16 torr, and residence times of 0.5-2.9 s, using toluene as carrier gas. The reaction products were allene, propene, and the corresponding imines. The ratio allene: propene varied in the range 6.7-1.6. The amines with CH₂CN and SO₂CH₃ substituents also formed HCN and SO₂ These appear to arise from complex free radical decomposition of the imine product. The first-order rate coefficients for the production of allene plus propene followed the Arrhenius equations.