ethyl 4-[(1S)-1-(2-tert-butoxycarbonylhydrazino)ethyl]benzoate

2-Methyl-2-propanyl 2-{(1R)-1-[4-(ethoxycarbonyl)phenyl]ethyl}hyd razinecarboxylate

ethyl 4-prop-1-en-2-ylbenzoate

1-[4-(chloromethyl)phenyl]ethanone