Solvent and Structural Effects on the Activation Parameters of the Reaction of Carboxylic Acids with Diazodiphenylmethane
作者:J. B. Nikolić、G. S. Ušćumlić
DOI:10.1002/kin.20762
日期:2013.4
The kinetics of the reaction of benzoic, 2‐methylbenzoic, phenylacetic, cyclohex‐1‐enecarboxylic, 2‐methylcyclohex‐1‐enecarboxylic, and cyclohex‐1‐eneacetic acids with diazodiphenylmethane was studied at 30, 33, 37, 40, and 45°C in a set of 12 protic and aprotic solvents. The reactions were found to follow the second‐order kinetics. The activation energy as well as the activation parameters, such as
研究了苯甲酸,2-甲基苯甲酸,苯乙酸,环己-1-烯羧酸,2-甲基环己-1-烯羧酸和环己-1-烯乙酸与重氮二苯甲烷在30、33、37、40和45的反应动力学在12种质子传递和非质子传递溶剂中的°C。发现反应遵循二级动力学。活化能以及活化参数(例如标准熵,标准焓和活化的标准吉布斯能量)是根据二阶速率常数计算得出的。对于每种检查的化合物,分析了溶剂和结构对活化能和标准Gibbs活化能的影响。Kamlet-Taft多重相关分析的结果表明,特定的溶剂-溶质相互作用在控制反应中起主导作用。