N-tert-Butyloxycarbonyl-(S)-1-(4-acetamidophenyl)ethylamine

N-(4-(1-azidoethyl)phenyl)acetamide

tert-butyl (1-(4-nitrophenyl)ethyl)carbamate

1-(4-nitro-phenyl)-ethylamine

N-(4-ethylphenyl)acetamide