4-[(4-phenoxyphenyl)methylidene]-2-phenyl-1,3-oxazol-5-one

2-phenyl-4-(triphenyl-λ⁵-phosphanylidene)-1,3-oxazol-5-one

N-(1-benzoyl-2,4-dioxopyrrolidin-3-yl)benzamide

N-[2-(dimethylamino)-2-oxoethyl]benzamide

2-phenyl-4-propan-2-ylidene-1,3-oxazol-5-one