tert-butyl 2-[(methylsulfonyl)oxy]-6-azaspiro[3.4]octane-6-carboxylate 、
ethyl 3-{4-methoxy-4-[(1-methylcyclobutyl)carbamoyl]piperidin-1-yl}-8-azabicyclo[3.2.1]octane-8-carboxylate 、
哌啶-4-甲酸乙酯 在
甲醇 、
二氯甲烷 作用下,
反应 120.0h,
以to give tert-butyl 2-[4-(ethoxycarbonyl)piperidin-1-yl]-6-azaspiro[3.4]octane-6-carboxylate (0.264 g, 12.5%) as a yellow oil的产率得到tert-butyl 2-[4-(ethoxycarbonyl)piperidin-1-yl]-6-azaspiro[3.4]octane-6-carboxylate