tert-butyl 3-allyloxy-4,4-dimethoxypiperidine-1-carboxylate 、 Trifluoroacetic acid monohydrate 、
二碳酸二叔丁酯 在
silica gel 、
ethyl acetate n-hexane 作用下,
以to obtain 4.37 g of the title compound as a light brown oily substance (91%)的产率得到tert-butyl 3-allyloxy-4-oxopiperidine-1-carboxylate