哌啶-4-甲醛

N-Boc-4-氰基哌啶

4-乙烯基哌啶-1-甲酸叔丁酯

4-[(羟基亚胺)甲基]哌啶-1-羧酸叔丁酯

tert-butyl 4-(2,2-dibromoethenyl)piperidine-1-carboxylate