2,2,6,6-tetramethyl-4-piperidin-1-yl-1,3-dihydropyridine

N,N-dimethyl-5-piperidin-1-ylsulfonylnaphthalen-1-amine

N-Pentabromophenylpiperidine

1,2,3,4,5-五溴苯

nitric acid,piperidine