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In the given transformation, which of the following is the most appropriate reagent?

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Verified Answer
The correct answer is:
$\mathrm{NH}_2 \mathrm{NH}_2, \stackrel{(-)}{\mathrm{OH}}$
$\mathrm{NH}_2 \mathrm{NH}_2, \stackrel{(-)}{\mathrm{OH}}$
$\mathrm{ZnHg} / \mathrm{HCl}$ can't be used due to the presence of acid sensitive group i.e. $\mathrm{OH}$

and $\mathrm{Na} / \mathrm{Liq} . \mathrm{NH}_3$ and $\mathrm{NaBH}_4$ convert $-\mathrm{CO}-$ into $-\mathrm{CH}(\mathrm{OH})-$

and $\mathrm{Na} / \mathrm{Liq} . \mathrm{NH}_3$ and $\mathrm{NaBH}_4$ convert $-\mathrm{CO}-$ into $-\mathrm{CH}(\mathrm{OH})-$
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