2，5－二氯－4－溴苯酚合成的研究

A Study on the Synthesis of 2, 5-Dichloro-4-Bromophenol

报道了２，５－二氯－４－溴苯酚的合成工艺。对二氯苯经溴化、水解得该产物。本文提出了新的催化剂、水解反应性溶剂和导水剂，从而建立了常压法水解新工艺，缩短了反应时间，提高了合成反应的安全性，为该中间体的工业化生产提供了实验依据。

The synthesis of 2, 5-dichloro-4-bromophenol was studied. After the bromination of pdichlorobennzene and then its hydrolyzation the final product was prepared. Owing to use the better catalyst, new hydrolytic reaction solvent and the leading water agent, the new tehnology of normal pressure was established. In the new technology,the reaction time was reduced, the safety of operation was raised.