Process for producing 3-hydroxy-&ggr;-butyrolactone derivatives
申请人:Daiso Co., Ltd.
公开号:US06268515B1
公开(公告)日:2001-07-31
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.
NOVEL PROCESS FOR PRODUCING 3-HYDROXY-GAMMA-BUTYROLACTONE DERIVATIVES
申请人:DAISO CO., LTD.
公开号:EP1048662A1
公开(公告)日:2000-11-02
A process for producing 3-hydroxy-γ-butyrolactone derivatives represented by general formula (1), characterized by treating 3-hydroxy-γ-butyrolactone with a metal salt of hexamethyldisilazone, followed by the reaction with an electrophilic reagient such as an alkylating agent in the presence of, if necessary, a reaction accelerator, wherein R represents C1 -C6 alkyl, three- to six- membered cycloalkyl, aralkyl, 2-alkenyl, acyl, α-hydroxyalkyl, alkoxycarbonylalkyl, or alkoxycarbonyl.
一种生产通式(1)代表的 3-羟基-γ-丁内酯衍生物的工艺,其特征在于用六甲基 二硅氮酮的金属盐处理 3-羟基-γ-丁内酯、然后与亲电试剂如烷基化剂反应,必要时在反应促进剂存在下进行,其中 R 代表 C1 -C6 烷基、三至六元环烷基、芳基、2-烯基、酰基、α-羟基烷基、烷氧基羰基烷基或烷氧基羰基。