【摘要】 描述了用D-(-)-苯甘氨酸丁酯及其盐酸盐为拆分剂,在水或醇的反应体系中,与扁桃酸反应,制备R-(-)-扁桃酸和 S-(+)-扁桃酸的过程;其中 R-(-)-扁桃酸有 98.9%的收率和32 %的光学纯度;而S-(+)-扁桃酸有90.1%的收率和 66.73%的光学纯度。另外也描述了苯甘氨酸丁酯及其盐酸盐的一般合成方法。更多还原

【Abstract】 A process was disclosed for resolving mandelic acid using optically active phenylglycine butyl ester or its hydrochloride. The yield and optical purity of S-(+)-mandelic are 90.1% and 66.73% for At the same time, The yield and optical purity R-(-)-mandelic acid are 98.9% and 32% respectively. Additionally, a general synthetic method of phenylglycine butyl ester and its hydrochloride was disclosed.更多还原