申请人:Kureha Kagaku Kogyo Kabushiki Kaisha
公开号:US04822928A1
公开(公告)日:1989-04-18
Disclosed herein is a process for producing 2,5-dichlorotoluene which is useful as a monomer of heat-resistant polymers and an intermediate raw material for medicines, agricultrual chemicals and various organic synthetic substances, the process giving 2,5-dichlorotoluene at a high selectivity and in a high yield and comprising the steps of chlorinating 4-t-alkyltoluene or 4-isopropyltoluene in the presence of a catalyst, thereby obtaining a 2,5-dichlorocompound, and bringing the formed 2,5-dichlorocompound into contact with toluene in the presence of a catalyst, thereby subjecting the 2,5-dichlorocompound to transalkylation.
本文公开了一种生产2,5-二氯甲苯的方法,该方法可用作耐热聚合物的单体和药品、农药和各种有机合成物的中间原料,该过程以高选择性和高产率给出2,5-二氯甲苯,包括以下步骤:在催化剂存在下氯化4-叔烷基甲苯或4-异丙基甲苯,从而获得2,5-二氯化合物,并在催化剂存在下将形成的2,5-二氯化合物与甲苯接触,从而使2,5-二氯化合物经历转移烷基化反应。