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

(4-氯苯甲酰基)乙酸乙酯

(S)-methyl 3-(4-chlorophenyl)-4-((methoxycarbonyl)amino)butanoate

(4S)-1-tert-butoxycarbonyl-4-(4-chlorophenyl)-2-pyrrolidone

ethyl (3R)-3-cyano-3-(4-chlorophenyl)propanoate