2-(7-oxa-bicyclo[4.1.0]hept-1-yl)ethanol

1-(7-oxabicyclo[4.1.0]heptan-1-yl)propan-2-ol

2-(7-oxabicyclo[4.1.0]heptan-1-yl)-1-phenylethanol

2-(ketene ethylene acetal)-cyclohexanone

2-羟基环己酮二聚物