2-cyano-5-(dimethylamino)-5-(4-nitrophenyl)penta-2,4-dienamide

3-(3-chlorophenyl)-1-(4-nitrophenyl)prop-2-en-1-one

ethyl 2-hydroxy-2-(4-nitrophenyl)butanoate

3-(4-nitrophenyl)-1-(2-pyridyl)-2-propenone