α-氰基苄基碳负离子钠盐与碳酸二乙酯的单电子转移反应动力学和机理  

Kinetics and Mechanism of the SET Reaction of α-Cyanobenzyl Carbanion Sodium Salt with Diethyl Carbonate

作　　者：杨第伦[1] 赵文轶 金璟[1] 刘有成[1] 

机构地区：[1]兰州大学化学系

出　　处：《化学学报》1993年第12期1185-1190,共6页Acta Chimica Sinica

摘　　要：测定了α-氰基苄基碳负离子钠盐与碳酸二乙酯缩合反应产物的结构及其分布,反应中间体的EPR谱,反应过程中产物和溶剂的CIDNP效应和反应动力学,为这一缩合反应提出了单电子转移-负离子自由基分解-自由基偶合的非链式自由基机理。Based on EPR observation of diethyl carbonate ketyl radical, CIDNP signals due to both the product ethyl α-cyanophenylacetate and DMSO impunty in the solvent DMSO-d_6, as well as the fitness to succesive first-order kinetics, an electron-transfer initiated non-chain radical mechanism is proposed for the reaction between α-cyanobenzyl carbanion sodium salt (1) and diethyl carbonate (2) in DMSO.

关 键 词：氰基苄基 碳阴离子 钠盐 碳酸酯 

分 类 号：O623.662[理学—有机化学]