哌啶-4-甲醛

4-(氯甲基)哌啶-1-羧酸叔丁酯

1-叔丁氧羰基-4-[(甲磺酰基)甲基]哌啶

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

tert-butyl 4-[(3-bromophenoxy)methyl]piperidine-1-carboxylate