A compound of formula I and its enantiomeric counterpart V; a process for the preparation of diol I, and alternatively diol V, comprising a) the acetylation of diol II, or respectively diol VI, with an acetylating agent, wherein said acetylation is performed in the presence of a Lewis acid and b) an aqueous work-up of the reaction mixture; and a method for producing an enantiomerically enriched epoxide from an alkene, said method comprising admixing said alkene, a substantially enantiomerically pure chiral diol selected from the group comprising diol I and diol V and an oxidizing agent. The method can further comprise the addition of a phase-transfer catalyst.
一种具有式I及其对映体V的化合物;一种制备二醇I或二醇V的方法,包括a)使用乙酰化试剂使二醇II或二醇VI发生乙酰化,其中所述乙酰化在Lewis酸存在下进行,b)对反应混合物进行
水相处理;以及一种从烯烃制备对映富集
环氧化物的方法,该方法包括混合所述烯烃、从包括二醇I和二醇V在内的基团中选择的几乎对映纯手性二醇和氧化剂。该方法还可以包括添加相转移催化剂。