Which of the following are used to convert RCHO into $R C H_{2} O H$ ?
(a) $H_{2}$ /Pd
(b) $L i A I H_{4}$
(c) $N a B H_{4}$
(d) Reaction with RMgX followed by hydrolysis

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Solution

Conversion of aldehyde into alcohol is a reduction reaction. This reduction can be carried out by adding hydrogen in presence of finely divided metal catalyst such as platinum, palladium or nickel.
$R C H O + H_{2} / P d - --- \to R C H_{2} O H$
It can also be prepared by using $N a B H_{4} a n d L i A I H_{4}$ as a reducing agent.
$R C H O + N a B H_{4} - --- \to R C H_{2} O H R C H O + L i A I H_{4} - ---- \to R C H_{2} O H$
Reaction of RMgX with any aldehyde other than methanal gives secondary alcohols not the primary alcohols.

(Where, $R = - C_{2} H_{5}, C_{3} H_{7}$ etc.)

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Similar questions

Which of the following are used to convert RCHO into $R C H_{2} O H$ ?

Q. Which one of the following is not used to convert

R C H O

into

R - C H_{2} O H

Q. Primary alcohols can be obtained from the reaction of

R M g X

followed by hydrolysis with:

$C H_{3} C H_{2} O H$ can be converted into $C H_{3} C H O$ by . . . .
(a) catalytic hydrogenation
(b) treatment with $L i A I H_{4}$
(c) treatment with pyridinium chlorochromate
(d) treatment with $K M n O_{4}$

Q. The most suitable reagent for the conversion of

R C H_{2} O H \to R C H O

is?

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Which of the following are used to convert RCHO into RCH2OH? (a) H2 /Pd (b) LiAIH4 (c) NaBH4 (d) Reaction with RMgX followed by hydrolysis

Which of the following are used to convert RCHO into $R C H_{2} O H$ ?
(a) $H_{2}$ /Pd
(b) $L i A I H_{4}$
(c) $N a B H_{4}$
(d) Reaction with RMgX followed by hydrolysis