作者:Jerry W. Cubbage、Brian W. Vos、William S. Jenks
DOI:10.1021/ja994150p
日期:2000.5.1
methyl 3-phenylpropyl sulfone in the gas phase results in formation of allylbenzene. Activation parameters of ΔH⧧ = 53.5 ± 1.0 kcal/mol and ΔS⧧ = −0.7 ± 1.4 cal/(mol·K) were obtained over the range of 490−550 °C. Similar measurements with a deuterated analogue show a substantial isotope effect, and a lower activation enthalpy is observed for the formation of styrene from methyl 2-phenylethyl sulfone
甲基 3-苯基丙基砜在气相中的热解导致形成烯丙基苯。ΔH⧧ = 53.5 ± 1.0 kcal/mol 和 ΔS⧧ = -0.7 ± 1.4 cal/(mol·K) 的活化参数是在 490-550 °C 范围内获得的。用氘代类似物进行的类似测量显示出显着的同位素效应,并且观察到从甲基 2-苯乙基砜形成苯乙烯的活化焓较低。连同对活化参数和动力学同位素效应的高质量从头计算,这些结果表明这是首次报道的简单砜的 Ei 反应。