2-乙炔噻吩

4-iodo-2-methylbut-3-yn-2-ol

1-(1,3-benzodioxol-5-yl)-4-hydroxy-4-methylpent-1-en-3-one

4-(3-hydroxy-3-methylbut-1-ynyl)benzene-1,2-dicarbonitrile

5-benzylidene-4,4-dimethyl-1,3-dioxolan-2-one