A process for preparing a 3-hydroxy-&ggr;-butyrolactone derivative represented by the following formula (1):
wherein R is C1-C6 alkyl, 3 to 6-membered cycloalkyl, aralkyl, 2-alkenyl, acyl, &agr;-hydroxyalkyl, alkoxycarbonylalkyl or alkoxycarbonyl, which is characterized in treating 3-hydroxy-&ggr;-butyrolactone with a metal salt of hexamethyldisilazane and then, reacting it with an electrophilic reagent, optionally in the presence of a reaction promoter.
一种制备下式(1)所示的3-羟基-
γ-丁内酯衍
生物的方法:其中R为C1-C6烷基、3-6环脂肪基、芳基烷基、2-烯基、酰基、α-羟基烷基、烷氧羰基烷基或烷氧羰基;其特征在于,将3-羟基-
γ-丁内酯与
六甲基二硅氮烷的
金属盐处理,然后在电子亲和试剂的作用下,可选地在反应
促进剂的存在下反应。