Question Detail

CHM 102 Alkynes: Structure, Bonding, and Nomenclature Objective Question

Question

Which method is used to prepare an alkyne from a vicinal dihalide?
Options
A Double dehydrohalogenation with a strong base (e.g., NaNH₂)
Correct Answer
B Hydrogenation
C Hydration
D Ozonolysis
Correct Answer

Option A is the correct answer.

Detailed Explanation

A vicinal dihalide undergoes two successive E2 eliminations with a strong base like NaNH₂ to form an alkyne.

Hint

Two equivalents of HX are eliminated.

Question Info