Which of the following reagent cannot be used to oxidize primary alcohols to aldehydes?

Pyridinium chloro chromate

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Heating in presence of Cu at

573

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K M n O_{4}

in acidic medium

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C r O_{3}

in anhydrous medium

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Solution

The correct option is A $K M n O_{4}$ in acidic medium
$K M n O_{4}$ in acidic medium cannot be used to oxidize primary alcohols to aldehydes. The oxidation will not stop at aldehyde stage. It will further continue to carboxylic acid. To stop oxidation at aldehyde stage, we need mild oxidising agent such as PCC or PDC is used.

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Similar questions

Which of the following reagents can be used to oxidise primary alcohols to aldehydes?
(a) $C r O_{3}$ in anhydrous medium
(b) $K M n O_{4}$ in acidic medium
(c) Pyridinium chlorochromate
(d) Heat in the presence of Cu at 573K

Q. Which of the following reagents can not be used to oxidise primary alcohols to aldehydes?

Q. Addition of alcohol to aldehydes in presence of anhydrous acid yield:

Q. Name the reagent used in oxidation of a primary alcohol to aldehyde.

Name the reagents used in the following reactions
Oxidation of a primary alcohol to carboxylic acid.

Oxidation of a primary alcohol to aldehyde

Bromination of phenol to 2, 4, 6 - tribromophenol

Benzyl alcohol to benzoic acid

Dehydration of propan-2-ol to propene

Butan-2-one to butan-2-ol

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