1,2,4-三苯基-1,4-丁二酮

2-苯基喹噁啉

ethyl 4-oxo-4-phenylbut-2-ynoate

1-phenyl-2-(triphenyl-λ⁵-phosphanylidene)ethanethione

1,1,1-trifluoro-4-phenylbut-3-yn-2-one