The invention relates to a process for the preparation of cyclopropyl benzyl ketone compounds of formula (II) wherein R1 represents fluorine or chlorine atom or C1-4 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 R2 represents C1-4 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.
该发明涉及一种制备
环丙基苯甲酮化合物的过程,其
化学式为(II),其中R1代表
氟或
氯原子或C1-4烷氧基团,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)的化合物反应获得的Grignard试剂反应。
化学式(IV)中,R2代表直链或支链的C1-4烷基团。该过程可以在工业规模上应用。在制备prasugrel的制备过程中,
化学式为(II)的化合物,其中R代表2位的
氟原子是一种中间体,prasugrel是一种用于治疗的血小板
抑制剂。