Synthesis of 1,3,4-trimethylcyclohex-3-en-1-carboxylic acid allyl ester
摘要:
The process of diene cyclization of 2,3-dimethylbutadiene with allyl methacrylicate was investigated. Effects of temperature, reaction duration, and ratio of reagents on the yield of 1,3,4-trimethylcyclohex-3-en-1-carboxylic acid allyl ester was studied. Optimal conditions of passing the process were found.
Effect of the reactants molar ratio on the kinetics of cycloaddition of 2,3-dimethylbuta-1,3-diene to allyl methacrylate
作者:I. S. Polevaya、G. G. Makitra、G. A. Marshalok、Ya. P. Kovalskyi
DOI:10.1134/s1070363212120109
日期:2012.12
The cycloaddition reaction between 2,3-dimethylbuta-1,3-diene and allyl methacrylate proceeds by the second order kinetics. The rate constants increase with the increase in the excess of one of the reactants. The change in the effective rate constants is described by the Michaelis-Menten equation indicating that the reaction proceeds through the initial equilibrium stage of formation of an intermediate complex which then transforms into the product. The effective rate constants, the equilibrium constants of formation of the intermediate complex, and the rate constant of its transformation into the reaction product were determined, as well as the thermodynamic parameters of the formation of the intermediate complex and the activation parameters of the transformation of the intermediate complex into the product. The limiting stage of the reaction is established and its mechanism is suggested.