Question:


For above chemical reactions, identify the correct statement from the following :

Show Hint

Hot acidic KMnO4 cleaves the ring C=C oxidatively; cold dilute (neutral) KMnO4 only hydroxylates it (syn-diol).
Updated On: Nov 4, 2026
  • Both compound 'A' and compound 'B' are dicarboxylic acids
  • Both compound 'A' and compound 'B' are diols
  • Compound 'A' is diol and compound 'B' is dicarboxylic acid
  • Compound 'A' is dicarboxylic acid and compound 'B' is diol
Show Solution
collegedunia
Verified By Collegedunia

The Correct Option is D

Solution and Explanation

Reaction 1: cyclohexene with \(\mathrm{KMnO_4/H_2SO_4}\), heat (strong oxidation). The C=C bond is cleaved and each carbon becomes COOH, giving hexanedioic acid (adipic acid), \(\mathrm{HOOC(CH_2)_4COOH}\). So A is a dicarboxylic acid.
Reaction 2: cyclohexene with \(\mathrm{KMnO_4/H_2O}\) at 273 K (cold, dilute, Baeyer's reagent). Syn-hydroxylation gives cis-cyclohexane-1,2-diol. So B is a diol.
Answer: (4) Compound 'A' is dicarboxylic acid and compound 'B' is diol
Was this answer helpful?
0
0