首页 / 专利库 / 酸,碱,盐,酸酐和碱 / 硫酸 / 硫酸盐 / 烷基醚硫酸盐 / Preparation of cysteamine or cystamine

Preparation of cysteamine or cystamine

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专利汇可以提供Preparation of cysteamine or cystamine专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain the title compound in high purity and yield, by reacting an aminoalkyl-sulfate with H
2 S and an alkali polysulfide formed from S
2 and an alkali hydroxide (A) rather than A alone to suppress the formation of thioethers as by- products.
CONSTITUTION: A solution of sulfur meal in ethand is adeed to an aqueous NaOH saturated with H
2 S to form a sodium polysulfide solution. An amino alkyl sulfate, e.g. 2-amino-ethanol sulfate, of formula I: (R
1 ,R
2 ,R
3 , and R
4 are H or CH
3 independently is reacted with the solution at 60W80°C for 40W50hr to give a cysteamine of formula II: (n is 1,2, or 3) or a cystamine of formula III. The cystamine is obtained by oxidizing cystenamine in the controlled atmosphere; and the cysteamine, in the atmosphere of nitrogen.
USE: Usable for substances having radiation damage protecting properties.
COPYRIGHT: (C)1980,JPO&Japio,下面是Preparation of cysteamine or cystamine专利的具体信息内容。

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