Question

Cyclohexene on oxidation with \( \text{KMnO}_4 \) in dil. \( \text{H}_2\text{SO}_4 \) forms

• A. Cyclohexanol
• B. Cyclohexanone
• C. Hexanoic acid
• D. Adipic acid

Hint:

Oxidative cleavage of Cyclohexene $\rightarrow$ Adipic Acid (6 carbons).

Answer 1

The Correct Option is D

Step 1: Concept
Strong oxidizing agents like acidified $\text{KMnO}_4$ cause oxidative cleavage of double bonds.

Step 2: Meaning
Cleavage of a cyclic alkene results in an open-chain dicarboxylic acid.

Step 3: Analysis
Cyclohexene has a 6-carbon ring with one double bond. Acidified $\text{KMnO}_4$ breaks the $\text{C=C}$ bond and oxidizes the terminal carbons to carboxyl groups ($\text{-COOH}$).

Step 4: Conclusion
This results in hexane-1,6-dioic acid, commonly known as Adipic acid. Final Answer: (D)