The solution relates to a method of preparing sitagliptin of formula I, comprising hydrogenation of an enamino-amide precursor of formula II, wherein the hydrogenation is carried out in a suspension or a solution and is catalyzed by a complex compound formed of Ru and an (R) or (S)-pseudo-o-bisphosphino-[2,2]-paracyclophane ligand of general formula VI, wherein R are the same or different substituents from the group consisting of C1-4 alkyls, C3-8 cycloalkyls and Ar, and Ar is an unsubstituted or substituted aryl, and optionally other component(s) necessary for formation of the complex compound.
该解决方案涉及一种制备式I的
西格列汀的方法,包括将式II的烯胺酰胺前体进行氢化,其中氢化是在悬浮液或溶液中进行,并由Ru和(R)或(S)-伪对
二膦-[2,2]-对环
蒎烷配体VI的复合物催化,其中R是来自C1-4烷基,C3-8环烷基和Ar的相同或不同取代基的群,Ar是未取代或取代的芳基,并且可以选择其他必要的组分来形成复合物。