2,2-dimethyl-4,4-diphenylbut-3-enal acetylhydrazone

1-(p-cyanophenyl)-3,3-dimethyl-5,5-diphenyl-1-azapenta-1,4-diene

4,4-dimethyl-1,6,6-triphenyl-2-aza-hexa-2,5-diene

[1-(2,2-Dimethyl-3,3-diphenyl-cyclopropyl)-meth-(E)-ylidene]-phenyl-amine