A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention facilitates Lewis acid catalyst stability in a continuous reaction process where the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.
一种在固体
路易斯酸催化剂和由有机溶剂和
水组成的溶剂存在下从糖制备一种或多种
乳酸酯和
2-羟基-3-丁烯酸或α-羟基蛋
氨酸类似物的连续流动工艺。本发明有利于
路易斯酸催化剂在连续反应过程中的稳定性,其中
水的含量最高可达或等于有机溶剂的 10 Vol.%。