Diisobutene
Diisobutene (also known as Diisobutylene and Isooctene) refers to a pair of organic compounds with the overall formula C8H16.The isomers have the same carbon skeleton but differ in the location of the C=C bond.These compounds arise via the acid catalyzed dimerization of isobutene, a reaction that proceeds via the carbocation (CH3)3C+.[1] Hydrogenation is performed at a significant scale to give isooctane, which is an important fuel additive.Diisobutene is used as precursors to isononylol and octylphenols by hydroformylation/hydrogenation and phenol alkylation, respectively.