The present invention relates to Sitagliptin intermediate and preparation method and use thereof. The method comprises reacting compound of formula (II) and trifluorobromobenzene with a Grignard reagent by a Grignard reaction to obtain a compound of formula (I). Compound of formula (I) is a new intermediate compound for the synthesis of Sitagliptin. Compound of formula (I) can be easily used for preparing another important intermediate compound of formula (V) for the synthesis of Sitagliptin. The structures of the compounds mentioned above are as the following:
本发明涉及Sitagliptin中间体及其制备方法和用途。该方法包括通过Grignard反应将式(II)化合物和三
氟溴苯与Grignard试剂反应,以获得式(I)化合物。式(I)化合物是合成Sitagliptin的新中间体化合物。式(I)化合物可轻松用于制备式(V)化合物的另一个重要中间体,以合成Sitagliptin。上述化合物的结构如下: