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?

Question

Quizplus · Accepted Answer

The dimerization of isobutylene can result in the formation of two isomeric alkenes, 2,4,4-trimethyl-1-pentene and 2,3,4-trimethyl-1-pentene. The hydrogenation of either of these alkenes would result in the formation of 2,2,4-trimethylpentane. However, since the given hydrocarbon is a single compound, it must have resulted from the hydrogenation of only one of the isomeric alkenes. Therefore, the structure of the hydrocarbon is 2,2,4-trimethylpentane, and the best choice is A) 2,2,4-Trimethylpentane.

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