Question

What is/are the reagent(s) for the given conversion?

• A. Alcoholic $KOH$
• B. Alcoholic $KOH$ followed by $NaN{H}_2$
• C. Aqueous $KOH$ followed by $NaN{H}_2$
• D. $Zn/C{H}_{3}OH$

Answer 1

The correct option is B Alcoholic $KOH$ followed by $NaN{H}_2$

Here, a vicinal dibromide is converted into ethyne. We know that for the preparation of alkynes from vicinal dihalides, alcoholic $KOH$ followed by $NaN{H}_2$ is used as a reagent.

Thus, option (b) is the correct answer.