Cyclobutene
Cyclobutene is an organic compound with the chemical formula C4H6.A modern synthesis involves the 2-step dehydration of cyclobutanol.[1] The compound was first prepared by thermolysis of the ammonium salt [C4H7N(CH3)3]OH (cyclobutyltrimethylammonium hydroxide).This strongly exothermic reaction reflects the dominance of ring strain.In contrast, the corresponding equilibrium for hexafluorocyclobutene disfavors hexafluorobutadiene.
Preferred IUPAC nameCAS NumberChemSpiderECHA InfoCardEC NumberPubChemCompTox DashboardSMILESChemical formulaMolar massDensityBoiling pointstandard stateorganic compoundcycloalkenecondensesdehydrationcyclobutanolthermolysisammonium saltisomerizes1,3-butadieneexothermic reactionring strainequilibriumhexafluorocyclobutenehexafluorobutadieneCyclobutaneCyclobutadieneCyclobutyneSquaric acidhydrocarbonCycloalkenesAlkenesCyclopropeneCyclopenteneCyclohexeneCyclohepteneCycloocteneCyclononeneCyclodeceneDienesCyclopentadiene1,3-Cyclohexadiene1,4-Cyclohexadiene1,3-Cycloheptadiene1,4-CycloheptadieneCyclooctadiene1,5-CyclooctadieneTrienesBenzeneCycloheptatrieneCyclooctatetraeneCyclononatetraene