4-苯基-3-丁炔-2-酮

phenylene-ethylene

3-methoxy-1-phenyl-4-(triphenyl-l⁵-phosphanylidene)but-2-en-1-one

(2,4-Dioxo-4-phenylbutyl)triphenylphosphonium-chlorid

4-(1-Methyl-3-phenyl-2-propinyliden)morpholinium-trifluormethansulfonat