Abstract: The kinetics of polycondensation of aralkyl ethers such as p-di(methoxy) xylene and 4,4/-di(methoxymethyl) diphenyl ether with ten kinds of aro-matics has been studied in the presence of catalysts for Friedel-Crafts reaction. The kinetic expression was found to be V=k [catalyst]0[aromatics]. A series of rate constants and activation energies was calculated. With the nuclear magnetic resonance method, the intermediate product, the carbon-ium ion, was determined, and the following polycondensation mechanism of electrophilic substitution by the carbonium ion was suggested: It was found that the order of reactivity for aromatics reacting with aralkyl ethers is as follows: phenol > p-cresol > 4-tert-butyl-phenol >o-cresol > salicylic acid > acenaphthene > acenaphthylene > 1 , 2 , 4 , 5-tetramethyl-benzene > phenyl ether > naphthalene. The electrophobic group present on the rings of aromatics is favorable to the reactivity of the aromatics.

摘要： 本文研究了芳烷基醚与芳香族化合物在Friedel-Crafts反应型催化剂作用下缩聚反应动力学.提出了反应速度方程V=k[X]_0[Ar].求得一系列的反应速度常数和反应活化能数据.用核磁共振波谱测定了反应的中间产物——正碳离子,提出了该缩聚反应为正碳离子进攻芳环的亲电取代机理模型.