3-甲基-3-(4-氧代哌啶-1-基)吡咯烷-1-羧酸乙酯 、
4-氟-1,2-苯二胺 在
乙腈 、
水 作用下,
以the title compound was obtained as a mixture of regioisomers (regio isomer: 3-(4-(2-amino-5-fluorophenylamino)piperidin-1-yl)-3-methylpyrrolidine-1-carboxylate) as pale yellow solid (66.7 mg, 61.7% yield)的产率得到ethyl 3-(4-(2-amino-4-fluorophenylamino)piperidin-1-yl)-3-methylpyrrolidine-1-carboxylate