Question:
The major product ‘B’ of the following reaction sequence is
The major product ‘B’ of the following reaction sequence is
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Hydroboration–oxidation leads to anti-Markovnikov alcohol.
Be cautious of rearrangement and oxidation in multistep reactions.
Updated On: May 19, 2025
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The Correct Option is D
Solution and Explanation
Reaction Steps:
% Option
(A) Treatment of benzyl alcohol with HBr forms benzyl bromide.
% Option
(B) Reaction with alcoholic KOH leads to elimination, forming styrene.
% Option
(C) Hydroboration–oxidation adds OH group anti-Markovnikov giving phenylethanol.
% Option
(D) Final step with NaOH/H$_2$O$_2$ oxidizes alcohol to aldehyde.
Thus, major product is benzaldehyde (C$_6$H$_5$CHO).
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