Process for preparing the piperazine salt of 2,5-dihydroxybenzenesulphonic acid monotosylate
申请人:ESTEVE QUIMICA, S.A.
公开号:EP0412011A2
公开(公告)日:1991-02-06
The process is characterized in that the diethylamine salt or the ammonium salt of 2,5-dihydroxybenzenesulphonic acid is used as starting material, which salt is tosylated in an ammoniacal medium to lead in both cases to the production of the ammonium salt of 2,5-dihydroxybenzenesulphonic acid monotosylate, which in its turn is converted initially to the corresponding piperazine disalt which is separated in an aqueous medium, and finally in an aqueous-alcoholic medium the piperazine salt of 2,5-dihydroxybenzenesulphonic acid monotosylate, also known as piperazine sultosylate, is obtained.
Medicinal applications.
该工艺的特点是使用
2,5-二羟基苯磺酸的
二乙胺盐或
铵盐作为起始原料,在
氨化介质中对其进行
甲苯磺化,从而生产出
2,5-二羟基苯磺酸单甲
苯磺酸盐的
铵盐、最后在
水醇介质中得到
2,5-二羟基苯磺酸单甲
苯磺酸盐的
哌嗪盐,也称为
哌嗪磺酸盐。
医药应用。