Single Choice

The most suitable reagent for the conversion of $$ R-CH_{2}-OH\rightarrow R-CHO$$ is :

A$$CrO_{3}$$
B$$PCC$$ (Pyridinium Chlorochromate)
Correct Answer
C$$KMnO_{4}$$
D$$K_{2}Cr_{2}O_{7}$$

Solution

The most suitable reagent for the conversion of $$ R-CH_{2}-OH\rightarrow R-CHO$$ is $$PCC$$ (Pyridinium Chlorochromate).
Primary alcohols are oxidized to aldehydes. Aldehydes are further oxidized to carboxylic acids.
$$PCC$$ (Pyridinium Chlorochromate) is a mild oxidizing agent. it oxidizes primary alcohols to aldehydes only. The further oxidation to carboxylic acid does not occur.
$$CrO_{3}$$, $$KMnO_{4}$$ and $$K_{2}Cr_{2}O_{7}$$ are strong oxidizing agents. They oxidize primary alcohol to aldehdye and further to carboxylic acid.

SIMILAR QUESTIONS

Physical World

Ketones $$[ R-\underset{O}{\underset{||}{C}}-R']$$ where, $$R={ R }^{ \prime }=$$ alkyl group can be obtained in one step by :

Physical World

How will you bring about the following conversions in not more than two steps ? Ethanol to 3-Hydroxybutanal

Physical World

Suggest a reagent for the following conversion:

Physical World

Ketones, where, R & R' are alkyl groups can be obtained in one step by:

Physical World

The most suitable reagent for the conversion of primary alcohol into aldehyde with the same number of carbon is:

Physical World

The compound on dehydrogenation gives a ketone. The original compound is:

Physical World

Encircle whichever of the following:

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