Method of preparation of anilines substituted by chlorine in the meta position

摘要

A method of preparing a meta-chloroaniline by contacting a substituted aniline containing a chlorine substituent at other than a meta position and a chlorine substituent at the meta position with hydrogen in solution in an acid medium in the presence of a noble metal catalyst at elevated temperature and pressure. The aniline reactant can contain organo substituents on the ring. The product which results is either a 3-chloroaniline or a 3,5-dichloroaniline which similarly can contain organo substituents on the ring.