Consider the constitutional isomers 2-methylbut-1-ene, 2-methylbut-2-ene, and 3-methylbut-1-ene. When each of these alkenes is subjected to catalytic hydrogenation (H₂, Pt), a single product results. Which of the following best describes the structural relationship among these products? A) The products are cis-trans isomers. B) The products are identical. C) The products are constitutional isomers. D) The products are enantiomers. E) The products are diastereomers.

Question

Quizplus · Accepted Answer

Catalytic hydrogenation (H₂, Pt) of alkenes adds hydrogen across the double bond, resulting in the formation of an alkane. Since all three constitutional isomers have only one double bond, the product of catalytic hydrogenation will be the same for all three. Therefore, the products are identical.

Consider the Constitutional Isomers 2-Methylbut-1-Ene, 2-Methylbut-2-Ene, and 3-Methylbut-1-Ene