methyl 5,6-dichloro-2-[(2-oxo-piperidin-1-yl)methyl]nicotinate 、
4-哌啶甲酸叔丁酯 以to give methyl 6-[4-(tert-butoxycarbonyl)piperidin-1-yl]-5-chloro-2-[(2-oxopiperidin-1-yl)methyl]nicotinate as oil的产率得到methyl 6-[4-(tert-butoxycarbonyl)piperidin-1-yl]-5-chloro-2-[(2-oxo-piperidin-1-yl)methyl]nicotinate