The present invention provides a process for producing an alkanediol derivative represented by the general formula (II) from an ester compound represented by the general formula (I), safely without giving rise to racemization.
The present invention lies in a process for producing an alcohol derivative represented by the following general formula (II):
(wherein R2 and R3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; X is a hydrogen atom or a protecting group for hydroxyl group; and n is 0 or 1), which process comprises reducing an ester compound represented by the following general formula (I):
(wherein R1 is an alkyl group having 1 to 4 carbon atoms; and R2, R3, X and n have the same definitions as given above) with sodium borohydride in a mixed solvent of at least one kind of solvent selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons and alicyclic hydrocarbons and a primary alcohol.
本发明提供了一种从代表通式(I)的酯化合物中安全地生产代表通式(II)的烷二醇衍
生物的方法,而不产生旋光异构体。本发明涉及一种生产代表以下通式(II)的醇衍
生物的方法:(其中R2和R3各自独立地为氢原子或具有1至4个碳原子的烷基;X为氢原子或羟基的保护基;n为0或1),该方法包括在至少一种溶剂的混合溶剂中,所述溶剂从芳香族烃、脂肪族烃和脂
环烃组成的群体中选择至少一种溶剂和一种一级醇的存在下,用
硼氢化钠还原代表以下通式(I)的酯化合物:(其中R1为具有1至4个碳原子的烷基;R2、R3、X和n具有上述相同的定义)。