VERFAHREN ZUR HERSTELLUNG VON 2,5-DICHLOROTOLUOL.

摘要

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 medicine, agricultural chemicals and various organic synthetic substances. The process gives 2,5-dichlorotoluene at a high selectivity and in a high yield. It comprises the steps of chlorinating 4-t-alkyltoluene or 4-isopropyltoluene in the presence of a catalyst, thereby obtaining a 2,5-dichloro compound, and bringing the formed 2,5-dichlorocompound into contact with toluene in the presence of a catalyst, thereby subjecting the 2,5-dichloro compound to transalkylation.