The invention relates to a process for the preparation of cyclopropyl benzyl ketone compounds of formula (II) wherein R
1
represents fluorine or chlorine atom or C
1-4
alkoxy group, by the reaction of a Grignard reagent, obtained from the reaction of compound of formula (V), wherein X represents chlorine or fluorine atom, with the compound of formula (IV), wherein R
2
represents C
1-4
alkyl group, having a straight or branched chain. The process can be applied preferably on industrial scale. Compound of formula (II), wherein R represents a fluorine atom in position 2 is an intermediate of the preparation process of prasugrel, which is a platelet inhibitor used in the therapy.
本发明涉及一种制备
环丙基苯甲酮化合物的方法,其
化学式为(II),其中R1代表
氟或
氯原子或C1-4烷氧基团,该方法通过将
化学式为(V)的化合物(其中X代表
氯或
氟原子)与
化学式为(IV)的化合物(其中R2代表直链或支链的C1-4烷基团)反应得到Grignard试剂,可在工业规模上进行。其中,
化学式为(II),其中R代表2位的
氟原子是prasugrel制备过程的中间体,prasugrel是一种用于治疗的血小板
抑制剂。