碳—碳键均裂反应的溶剂效应  

Solvent Effect on the Homolytic Reaction of Carbon-Carbon Bond

作　　者：杨第伦[1] 金璟[1] 李成贵[1] 高素莲[1] 包青芳 刘有成[1] 

机构地区：[1]兰州大学化学系,应用有机化学实验室兰州730000

出　　处：《化学学报》1994年第1期94-98,共5页Acta Chimica Sinica

基　　金：国家自然科学基金资助的课题

摘　　要：测定了meso-2,3-二氰基-2,3-二苯基丁二酸二乙酯分别在乙苯、苯乙醚、氯苯、苯甲酸甲酯、苯甲腈及1,2-二溴乙烷中,于90,100,110,120℃的异构化动力学、平衡常数、反应速率常数和活化参数.结果表明,平衡常数对溶剂和反应温度都不敏感.The kinetics of the thermal meso/dl ieomerization of meso-diethyl 2, 3-dicyano-2, 8-diphenylsuccinate were determined in ethylbenzene, ethylphenyl ether, chlorobcn-zene, methyl benzoate, phenyl cyanide and 1, 2-dibromoethane at 90, 100, 110 and 120癈 respectively. The equilibrium constants, rate constants and activation parameters of the thermal meso/dl isomerization was obtained. The results indicated that the equilibrium constants are not sensitive to both solvents and reaction temperature.

关 键 词：二氰基 二苯基 丁二酸二乙酯 

分 类 号：O623.613[理学—有机化学]