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Question: Answered & Verified by Expert
$\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}=\mathrm{CHCHO} \xrightarrow{x} \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCH}_2 \mathrm{OH}$. In the above sequence $X$ can be
ChemistryAlcohols Phenols and EthersJEE Main
Options:
  • A $\mathrm{H}_2 / \mathrm{Ni}$
  • B $\mathrm{NaBH}_4$
  • C $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 / \mathrm{H}^{+}$
  • D Both (a) and (b)
Solution:
1082 Upvotes Verified Answer
The correct answer is: $\mathrm{NaBH}_4$
$\mathrm{NaBH}_4$ and $\mathrm{LiAlH}_4$ attacks only carbonyl group and reduce it into alcohol group. They do not attack on double bond.

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