The acid-catalyzed dimerization of isobutylene gives a mixture of two isomeric alkenes,A and B.Hydrogenation of this mixture gives a single C₈H₁₈ hydrocarbon.What is the structure of this hydrocarbon? A)2,2,4-Trimethylpentane B)2,3,4-Trimethylpentane C)2,4-Dimethylhexane D)2,5-Dimethyhexane

Question

Quizplus · Accepted Answer

The dimerization of isobutylene gives two isomeric alkenes: 2,4,4-trimethylpentene and 2,4,4-trimethyl-2-pentene. Hydrogenation of either of these gives 2,2,4-trimethylpentane. Therefore, the structure of the hydrocarbon is 2,2,4-trimethylpentane, which is choice A.

The Acid-Catalyzed Dimerization of Isobutylene Gives a Mixture of Two