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JEE Main 2012Offline

Exam: JEE Main
Year: 2012
Mode: Offline
Subject: Chemistry
Chapter: Aldehydes and Ketones

JEE Main 2012 · Offline · Chemistry · Aldehydes and Ketones

In the given transformation, which of the following is the most...

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

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

Options

A $\mathrm{NH}_2 \mathrm{NH}_2, \stackrel{(-)}{\mathrm{OH}}$
B $\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}$
C $\mathrm{Na}$ , Liq. $\mathrm{NH}_3$
D $\mathrm{NaBH}_4$

Correct answer

A. $\mathrm{NH}_2 \mathrm{NH}_2, \stackrel{(-)}{\mathrm{OH}}$

Step-by-step solution

\mathrm{ZnHg} / \mathrm{HCl}

can't be used due to the presence of acid sensitive group i.e.

\mathrm{OH}

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

and

\mathrm{Na} / \mathrm{Liq} . \mathrm{NH}_3

and

\mathrm{NaBH}_4

convert

-\mathrm{CO}-

into

-\mathrm{CH}(\mathrm{OH})-

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