The present invention provides a process for the preparation of the compound 1- [5- (3-chloro-phenyl) -isooxazol-3-yl] - ethanone: Wherein the compound 5- (3-chlorophenyl) -isooxazol-3- carboxylate is reacted with CH3MgX. The present invention also provides a process for the preparation of (R) -1- [5- ( 3-chloro-phenyl) -isooxazol-3-yl] - ethanol : Wherein 1- [5- (3-chloro-phenyl) -isooxazol-3-yl] -ethanone is reduced to (R) -1- [5- (3-chloro-phenyl) -isooxazol-3-yl] -ethanol.
本发明提供了一种制备化合物1-[5-(3-
氯苯基)-
异噁唑-3-基]-乙酮的方法:其中将化合物5-(3-
氯苯基)-
异噁唑-3-羧酸酯与CH3MgX反应。本发明还提供了(R)-1-[5-(3-
氯苯基)-
异噁唑-3-基]-
乙醇的制备方法:其中1-[5-(3-
氯苯基)-
异噁唑-3-基]-乙酮被还原为(R)-1-[5-(3-
氯苯基)-
异噁唑-3-基]-
乙醇。