ethyl 2-cyano-2-(2-propylcyclohexylidene)acetate

ethyl 3-(2-chlorophenyl)-3-(4-chlorophenyl)-2-cyanoprop-2-enoate

ethyl 2-cyano-3-naphthalen-1-yl-3-phenylpropanoate

diethyl 2-cyano-2-(2-cyanoethyl)-3,3-dimethylpentanedioate