Process for the manufacture of .alpha.-hydroxycarboxylic acid amides by adding water onto cyanohydrins in an aqueous medium containing 10-60% by weight of the oxo compound on which the cyanohydrin is based, with the aid of a catalyst dissolved in the reaction medium and selected from the group consisting of alkali metal-, alkaline earth metal- and alkylammonium salts of boric acid, at a pH from 7-11.
在含有以氧化合物为基础的
氰醇的
水性介质中,通过向
氰醇上添加
水,在反应介质中溶解的催化剂的帮助下,所述催化剂选自
硼酸的碱
金属盐、碱土
金属盐和烷基
铵盐组成的群,以及pH值在7-11范围内,制备α-羟基
羧酸酰胺的制造工艺。