3-(p-nitrobenzylidene)phthalide

2-methyl-3-(4-nitrophenyl)prop-2-enoate

(E)-1-(4-fluorophenyl)-3-(4-nitrophenyl)-2-propen-1-one

6-chloro-N-(2-chloro-4-nitrophenyl)-3,4-dihydro-2,2,2-triphenyl-3-(4-nitrobenzylidene)-2H-benzo[e]-1,2-oxaphosphin-8-carboxamide

3,4-dihydro-2,2,2-triphenyl-3-(4-nitrobenzylidene)-2H-1,2-oxaphosphino[5,6-h]quinoline