Preparation of 2-cyano-4-nitro-6-bromoaniline_Kain Industrial Additive

Background and overview[1] 2-Cyano-4-nitro-6-bromoaniline is a very important disperse dye intermediate and an important raw material for the synthesis of disperse dyes such as disperse blue 183. Preparation[1] (1) Synthesis of 2-cyano-4-nitroaniline: A1. Put 100g o-chlorobenzonitrile into 333g sulfuric acid medium, then add mixed acid dropwise, and perform nitrification at 5-10°C to obtain nitrate; the…