Question

How will you bring about the following conversion in not more than two steps?

Ethanol to But-1-yne

Answer 1

\[\ce{\underset{Ethanol}{CH3CH2OH} ->[NaBr, H2SO4][Reflux]\underset{Bromoethane}{CH3CH2Br} ->[H-C ≡ C- Na+][Liq. NH3]\underset{But-1-yne}{CH3CH2 - C ≡ CH}}\]