PROCESS FOR PREPARING 2-AMINO-5-NITROBENZOPHENONE Russian patent published in 1996 - IPC

FIELD: as semiproduct in the synthesis of drugs and dyes. SUBSTANCE: product: 2-amino-5-nitrobenzophenol, yield 54- 85 %. Reagent 1: 2-chloro-5-nitrophenone. Reagent 2: ammonia. Reaction conditions: in multihydric alcohol selected from ethylene glycol or diethylene glycol with 5-25 % ammonia dissolved preliminarily therein at weight ratio of 2-chloro-5-nitobenzophenone to ammonia solution in alcohol of 1:5:10 at 120-160 C, pressure of 1.2-. 6 MPa for 1.5-6.0 followed by dilution of the reaction mixture with water, and if diethylene glycol is used, by treatment of the resulting product with 5-35 % HCl solution. EFFECT: more efficient preparation process. 1 tbl