Process for the preparation of N-acylated p-amino-phenols
申请人:Bayer Aktiengesellschaft
公开号:US05302742A1
公开(公告)日:1994-04-12
N-acylated p-amino-phenols can be prepared by catalytical hydrogenation of the underlying aromatic nitro compounds in a reaction medium of aqueous sulfuric acid in the sense of a Bamberger type reaction at elevated temperature, optionally in the presence of a water-miscible organic solvent, and subsequent reaction of this reaction mixture with an acid chloride, optionally in the presence of an acid binder and optionally in the presence of a diluent.