The invention relates to a method of preparing an optically active cyanohydrin carboxylic acid ester from an optically active cyanohydrin of opposite configuration, wherein said starting cyanohydrin is converted with a carboxylic acid in the presence of a dialkyl azodicarboxylate and a triarylphosphine.
The invention also relates to a method of preparing an optically active cyanohydrin of opposite configuration by a subsequent solvolysis of the ester obtained under conservation of the configuration.
本发明涉及一种从构型相反的光学活性
氰醇制备光学活性
氰醇
羧酸酯的方法,其中所述起始
氰醇在偶氮二
甲酸二烷基酯和三芳基膦存在下与
羧酸进行转化。
本发明还涉及一种制备光学活性相反构型
氰醇的方法,该方法是通过随后溶解在保持构型条件下获得的酯来制备光学活性相反构型的
氰醇。