4-氨基-3-溴-苯磺酰基乙酸及染料的合成和脱羧研究

Synthesis and Decarboxylation of 4-Amino-3-bromo phenylsulfonylacetic Acid and Dyes

以４－氨基－苯磺酰基乙酸为原料，用氢溴酸和双氧水溴化，合成了４－氨基－３－溴－苯磺酰基乙酸，并以此为重氮组分，合成了三支含溴偶氮染料，进行了热重脱羧研究。结果表明，染料的脱羧温度符合分散染料热熔法染色的温度要求。

Amino-3-bromo-phenylsulfonylacetic acid was prepared by bromination of 4-amino-phenylsulfonylacetic acid with bromine hydride and hydrogen peroxide.Using it as diazo component,three azo dyes containing bromine have been synthesized and the temperature of decarboxylation was obtained.The research showed that the temperature of decarboxylation was suitable for the temperature of thermosol dyeing method of disperse dyes.