For the given reaction: [scheme: ring-C(H)=CH-ring xrightarrowKMnO₄/H^+ 'P' (major product), see figure] 'P' is 1. [structure: ring-C(=O)-C(=O)-ring] 2. [structure: ring-CHO] 3. [structure: ring-COOH] 4. [structure: ring-CH(OH)-CH(OH)-ring]

Answer: 3. [structure: ring-COOH] Key idea: hot or acidic KMnO₄ cleaves a C=C bond and oxidises each fragment fully to the carboxylic acid. The double bond of the stilbene-type compound (Ar-CH=CH-Ar) breaks, each ArCH= becomes ArCOOH (aldehyde is oxidised further). So P is the carboxylic acid, option 3. The diketone, aldehyde and diol are not the major products under KMnO₄/H^+ .

Topic: Alkenes: ozonolysis and polymerization· Hydrocarbons

For the given reaction:[scheme: ring-C(H)=CH-ring KMnO_4/H^+ 'P' (major product), see figure]'P' is

For the given reaction:

[scheme: ring-C(H)=CH-ring \(\xrightarrow{KMnO_4/H^+}\) 'P' (major product), see figure]

'P' is

stilbene-type reaction with KMnO4/H+ and four product structures

1. [structure: ring-C(=O)-C(=O)-ring]

2. [structure: ring-CHO]

3. [structure: ring-COOH]

4. [structure: ring-CH(OH)-CH(OH)-ring]

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Answer: 3. [structure: ring-COOH]

Key idea: hot or acidic \(\mathrm{KMnO_4}\) cleaves a C=C bond and oxidises each fragment fully to the carboxylic acid.

The double bond of the stilbene-type compound (Ar-CH=CH-Ar) breaks, each \(\mathrm{ArCH=}\) becomes \(\mathrm{ArCOOH}\) (aldehyde is oxidised further). So P is the carboxylic acid, option 3. The diketone, aldehyde and diol are not the major products under \(\mathrm{KMnO_4/H^+}\).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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For the given reaction:[scheme: ring-C(H)=CH-ring KMnO_4/H^+ 'P' (major product), see figure]'P' is

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