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 provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein 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。本发明提供了一种在连续反应过程中稳定
路易斯酸催化剂的方法,其中
水的含量可达或等于有机溶剂的10体积%。