对位酯的合成技术与生产现状

Synthesis Technology and Present Situation of Manufacture of p-Aminophenyl-β-sulfatoethylsulfone

对位酯是活性染料最重要的中间体,乙烯砜型活性染料中间体之一。活性染料已成为我国目前第二大类染料品种,呈快速发展势头,对位酯的需求也随之逐年增加。以文献为基础,介绍了分别以乙酰苯胺、对硝基氯苯、硝基苯为原料合成对位酯的方法,并对各合成路线进行了分析、比较,指出了乙酰苯胺原料路线,对硝基氯苯原料路线的巯基乙醇法、硝基苯法、硫醚氧化法、β-氯乙醇硫酸酯法等的优缺点。同时介绍了国内目前对位酯的生产现状并分析了对位酯的发展前景。

The p-aminophenyl-β-sulfatoethylsulfone （abbr. as p-ester） is the most important synthetic intermediate of reactive dyes and one of the intermediates of vinyl-sulfone reactive dyes. Reactive dyes have become the second largest category of current dye in China. It is in a period of rapid development, so the demand of p-ester increases year by year. Based on the literature, the synthetic methods of p-ester are introduced respectively which use p-nitrochlorobenzene, acetanilide and p-nitrobenzene as raw materials. The analysis and comparison of these synthetic methods are carried out, and the advantages and disadvantages of these methods are also pointed out. The present situation of manufacture of p-ester at home is introduced, and the development prospect of p-ester is analyzed.