申请人:The Dow Chemical Company
公开号:US04684752A1
公开(公告)日:1987-08-04
Included is a process to prepare a 4-HALOmethyl-3,5-dihalo-2,6-disubstitutedphenol from a 4-methyl(substituted)phenol and a HALOgenating agent, in an aprotic organic diluent. The process is highly selective and efficient. For example, high purity 4-bromomethyl-3,5-dibromo-2,6-dimethylphenol can be prepared from 2,4,6-trimethylphenol and bromine, in bromochloromethane at high conversion.
本文介绍了一种制备4-卤代甲基-3,5-二卤代-2,6-二取代苯酚的方法,该方法使用4-甲基(取代)苯酚和卤代试剂,在无极性有机稀释剂中进行。该过程具有高度选择性和高效性。例如,可以从2,4,6-三甲基苯和溴在溴氯甲烷中高转化率下制备高纯度的4-溴甲基-3,5-二溴代-2,6-二甲基苯酚。