NEET2016ChemistryHydrocarbonsActual
In the reaction X and Y are:
Options
- AX = 1 - Butyne ; Y = 3 - Hexyne
- BX = 2 - Butyne ; Y = 3 - Hexyne
- CX = 2 - Butyne ; Y = 2 - Hexyne
- DX = 1 - Butyne ; Y = 2 - Hexyne
Correct answer
A. X = 1 - Butyne ; Y = 3 - Hexyne
Step-by-step solution
Terminal alkynes on reaction with NaNH 2 / liq . NH 3   results in the formation of sodium acetylides, and these sodium acetylides undergo nucleophilic substitution react with alkyl halides to form higher alkynes.