A process for preparing a substantially saltfree N-acyl taurine by reacting 1 mole of a higher molecular weight carboxylic acid chloride with 1 mole of a taurine salt containing at least 1 N-bonded H atom in a lower alkanol initially containing no more than about 15% by weight of water and about 1 mole of an alkali metal hydroxide at elevated temperatures, preferably at reflux, separating the insoluble precipitated alkali metal chloride from the alkanolic reaction medium at a temperature high enough to solubilize the N-acyl taurine reaction product, and cooling the reaction medium low enough to precipitate the desired N-acyl taurine.
一种制备基本上不含盐的 N-酰基
牛磺酸的工艺,其方法是:在最初含有不超过约 15%(重量)
水和约 1 摩尔碱
金属氢氧化物的低级烷醇中,使 1 摩尔较高分子量的
羧酸氯化物与 1 摩尔含有至少 1 个 N 键 H 原子的
牛磺酸盐在高温下反应、最好在回流条件下,在足以溶解 N-酰基
牛磺酸反应产物的高温下,将不溶解的沉淀碱
金属
氯化物从烷醇反应介质中分离出来,并将反应介质冷却到足以沉淀出所需的 N-酰基
牛磺酸的低温。