Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Consider the following sequence;
Y
what are X and Y ?
A
But-2-yne; 
Pent-2-yne B
But-1-yne; 
Pent-2-yne C
But-1-yne; 
Pent-1-yne D
But-2-yne; 
Pent-1-yne
Text Solution
Verified by ExpertsThe correct answer is:
B
X = But-1-yne; Y = Pent-2-yne
(liq. 
) deprotonates
acetylide ( 
).
SN 2 with 
gives
(but-1-yne 
).
Deprotonate again; alkylate with
(pent-2-yne 
).
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