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- #Aldehydes, Ketones and Carboxylic Acids
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Q.73) Identify the suitable reagent for the following conversion.
A) $\mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4$
B) (i) $\mathrm{LiAlH}_4$, (ii) $\mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}$
C) (i) $\mathrm{AlH}(\mathrm{iBu})_2$ (ii) $\mathrm{H}_2 \mathrm{O}$
D) (i) $\mathrm{NaBH}_4$, (ii) $\mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}$
Answers (1)
DIBAL-H (Diisobutylaluminium hydride) at –78 °C
It reduces esters to aldehydes selectively and does not reduce aldehydes further when used in cold conditions.
Hence, the correct answer is option (3).
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