描述:
1-tert-Butyl 4-benzyl (2R)-2-[2-(3-oxo-2,3-dihydro-1H-indazol-1-yl)ethyl]piperazine-1,4-dicarboxylate 、 ethyl acetate hydrochloride 反应 4.0h,
以to give the object compound (325 mg)的产率得到benzyl (3R)-3-[2-(3-oxo-2,3-dihydro-1H-indazol-1-yl)ethyl]piperazine-1-carboxylate hydrochloride