Question

Conversion from ethyne to butyne

Answer 1

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Answer 2

Explanation:

Higher alkynes are made from lower alkyne.

When ethyne is treated with sodium acetylide it gives acetylide.

Step 1: $CH\equiv CH+NaNH_2\rightarrow HC\equiv C^-Na^+$

Reaction of acetylide with chloro ethane will give us butyne as a product.

Step 2: $HC\equiv C^-Na^+CH_3C_2H_5Cl\rightarrow CH\equiv CH-C_2H_5$