tert-Butyl 4-(4-nitrobenzylamino)piperidine-1-carboxylate

tert-Butyl 4-(2-hydroxyethylamino)piperidine-1-carboxylate

tert-Butyl 4-[3-(3-bromophenyl)ureido]piperidine-1-carboxylate

1-(2-Chlorophenyl)-3-(piperidin-4-yl)urea hydrochloride

1-(3-Nitrophenyl)-3-(piperidin-4-yl)ureahydrochloride

tert-Butyl 4-[(2-fluoro-6-nitrophenylamino)methyl]piperidine-1-carboxylate

1-Fluoro-2-(2-methoxyethoxy)-3-nitrobenzene

4-[(4-Fluoro-2-nitrophenoxy)methyl]-1-methylpiperidine

tert-Butyl 1-(3-aminopyridin-2-yl)piperidin-4-ylcarbamate

tert-Butyl 4-(5-aminopyridin-2-ylamino)piperidine-1-carboxylate

2-Fluoro-6-(2-methoxyethoxy)aniline