Research progress in synthetic technology of p-aminophenyl-β-sulfatoethylsulfone

Abstract

The p-aminophenyl-β-sulfatoethylsulfone is one of the most important intermediates of vinyl-sulfone reactive dyes, and the demanded quantity increases gradually. The synthetic routes of p-aminophenyl-β-sulfatoethylsulfone using acetanilide, p-nitrochlorobenzene, etc. as raw materials are reviewed. The advantages and disadvantages and improved method of various kinds of synthetic routes are introduced, the objective evaluation is made for each synthetic route, and the esterification for synthesis of the intermediates of β-hydroxyethylsulfone esterification is analyzed. The prospect of p-aminophenyl-β-sulfatoethylsulfone is forecasted: Attaches great importance to the development of new routes, uses clean technology and new technology, develops the competitive products, speeds up the development of dye intermediates, and develops high value-added products.

Keywords

• dye
• p-aminophenyl-β-sulfatoethylsulfone
• sulfate
• acetanilide
• p-nitrochlorobenzene