A new method for the synthesis of γ-butanolides is described. The titanium tetrachloride promoted reaction of silyl ketene acetals with epoxides, followed by acidic work-up, affords the corresponding butyrolactones in 44–83% yield.
描述了一种合成γ-
丁醇化物的新方法。
四氯化钛促进了甲
硅烷基烯酮
缩醛与
环氧化物的反应,然后进行酸性处理,以44-83%的产率提供了相应的丁内酯。