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  4. Which of the following compounds will give butanone on oxidation with alkaline KMnO4 solution?

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Q. Which of the following compounds will give butanone on oxidation with alkaline $KMnO_{4}$ solution?

Aldehydes Ketones and Carboxylic Acids

Solution:

Alkaline $KMnO_4$ is a strong oxidising agent. it oxidises primary alcohols to aldehyde and secondary alcohols to ketone

(i) $\underset{(1^{\circ)}}{CH_3CH_2CH_2CH_2 - OH} \xrightarrow[KMnO_4(alkl.)]{(O)} \underset{\text{Butanol}}{CH_3CH_2CH_2CH_3} $

(ii) $\underset{(2^{\circ})}{CH_3CH_2\underset{\overset{|}{O}H}{C}HCH_3} \xrightarrow{(O)} \underset{\text{Butanone}}{CH_3CH_2\underset{\overset{||}{O}}{C}CH_3}$