4-(4-chlorophenyl)-1,2,3,6-tetrahydropyridine-1-carboxylic acid ethyl ester

3-(4-chlorophenyl)-3-formylpyrrolidine-1-carboxylic acid ethyl ester

6-(4-chlorophenyl)-7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylic acid ethyl ester

3-(4-chlorophenyl)-3-(2-oxoethyl)pyrrolidine-1-carboxylic acid ethyl ester

ethyl 3-(4-chlorophenyl)-3-(2-methoxyvinyl)pyrrolidine-1-carboxylate