1,5-diphenyl-3-(2-phenylethynyl)penta-1,4-diyn-3-ol

2-(trifluoromethylsulfonyl)ethynylbenzene

6-phenylhex-5-en-3-ol

4-phenyl-2-pyridin-2-ylbut-3-yn-2-ol

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