1-(2-phenylethynyl)cyclopropan-1-ol

1-(2-hydroxy-4-phenylbut-3-ynyl)cyclopropanol

2-methylidene-4-phenylbut-3-yn-1-ol

(E)-5-phenyl-penta-2-ene-4-yne-1-ol

(2Z)-2-benzylidene-1-benzofuran-3-one