(Z)-ethyl 4-bromo-3-(4-chlorophenyl)but-2-enoate

(+/-)-4-nitro-3-(4-chloro)butanoic acid

methyl (+/-)-3-(4-chlorophenyl)-4-nitrobutanoate

(R)-4,4-dimethyl-2-oxo-1-phenylpyrrolidin-3-yl 3-(4-chlorophenyl)-2-propenoate

(3R,3'R)-4,4-dimethyl-2-oxo-1-phenylpyrrolidin-3-yl 4-nitro-3-(4-chlorophenyl)butanoate