申请人:Institut Catala D'Investigacio Quimica
公开号:EP1770094A1
公开(公告)日:2007-04-04
A process for the preparation of chiral ketone I from diol II comprising the acetylation of diol II with an acetylating agent, preferably an acetic acid derivative, wherein said acetylation is performed in the presence of a Lewis acid. The process can further comprise additional previous steps, so that chiral ketone I can be prepared in four steps starting from D-fructose. Alternatively, a process for the preparation of chiral ketone V from diol VI comprising the acetylation of diol VI with an acetylating agent, preferably an acetic acid derivative, wherein said acetylation is performed in the presence of a Lewis acid. The process can further comprise additional previous steps, so that chiral ketone V can be prepared starting from L-fructose, L-sorbose or D-arabinose.
一种从二醇II制备手性酮I的方法,包括使用乙酰化剂(优选为乙酸衍生物)对二醇II进行乙酰化,其中所述乙酰化是在Lewis酸存在下进行的。该方法还可以包括额外的先前步骤,以便从D-果糖开始,经过四个步骤制备手性酮I。另一种方法是从二醇VI制备手性酮V的方法,包括使用乙酰化剂(优选为乙酸衍生物)对二醇VI进行乙酰化,其中所述乙酰化是在Lewis酸存在下进行的。该方法还可以包括额外的先前步骤,以便从L-果糖、L-山梨糖或D-阿拉伯糖开始制备手性酮V。