147237-67-0

Upstream product

• 92111-13-2 PPC₄ 
• 91-23-6 2-Nitroanisole 
• 147237-66-9 N-butyl-N-(3'-phenylpropyl)-4-methoxy-3-nitrobenzenesulfonamide 

Downstream Products

• 147237-68-1 N-butyl-N-(3'-phenylpropyl)-3-amino-4-hydroxybenzenesulfonamide 

Relevant academic research and scientific papers

A novel method for the preparation of 3-amino-4-hydroxybenzenesulfonamide percursors of 'acid alizarin violet N' derivatives

Chlorosulfonation of 2-nitroanisole gave 4-methoxy-3-nitrobenzenesulfonyl chloride (7) which was converted with N-butyl(3-phenylpropyl)amine into benzenesulfonamide (8). Hydrolysis of the ether and reduction of the nitro group of 8 followed by diazotization and coupling with 2-naphthol gave N-butyl-N-(3-phenylpropyl)-4-hydroxy-3-(2-hydroxy-1- naphthyl)azobenzenesulfonamide (1d).