Question:
Identify A, B and C in below reaction:
Identify A, B and C in below reaction:
Updated On: Feb 16, 2026
- A=Br2, B=KOH, C=NaNH2
- A-Br2, B=HCl, C-NaNH2
- A=Br2, B=HCl, C=NaNH4
- A=Br2, B=KOH, C=NaNH2
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The Correct Option is D
Solution and Explanation
To identify A, B, and C in the given reaction sequence, let's analyze each step:
Reaction with A: The initial compound contains an alkene group. When alkenes react with bromine \((\text{Br}_2)\), an anti-addition reaction occurs, leading to vicinal dibromides. Hence, A = Br2.
Reaction with B: The dibromide undergoes dehydrohalogenation. With alcoholic KOH, elimination occurs, forming an alkyne. Therefore, B = KOH.
Reaction with C: The alkyne can undergo further deprotonation when reacted with sodium amide \((\text{NaNH}_2)\) to form a more reactive acetylide ion. Thus, C = NaNH2.
Therefore, the correct sequence is: A=Br2, B=KOH, C=NaNH2.
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