Cyclohexene on oxidation with conc. `KMnO_(4)` forms

Options

A. `HOOC-(CH_(2))_(4)-COOH`
B. `HOOC-(CH_(2))_(3)-COOH`
C. `HOOC-(CH_(2))_(3)-overset(O)overset(||)(C)-CH_(3)`
D. `HOOC-(CH_(2))_(4)-CH_(3)`

Answer

To solve the question regarding the oxidation of cyclohexene with concentrated KMnO₄, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of Cyclohexene**:
Cyclohexene is a six-membered carbon ring with one double bond. Its molecular formula is C₆H₁₃.

2. **Understand the Reaction with KMnO₄**:
Concentrated KMnO₄ is a strong oxidizing agent. When alkenes are oxidized with KMnO₄, they typically undergo oxidative cleavage.

3. **Oxidative Cleavage of the Double Bond**:
In the case of cyclohexene, the double bond between two carbon atoms will be cleaved. Each carbon atom involved in the double bond will be oxidized.

4. **Determine the Products**:
- When the double bond is cleaved, the carbon atoms that had the double bond will form carboxylic acids if they have hydrogen atoms attached to them.
- In cyclohexene, both carbons involved in the double bond have hydrogen atoms. Therefore, both will be converted to carboxylic acids.

5. **Write the Chemical Equation**:
The oxidation of cyclohexene with concentrated KMnO₄ leads to the formation of hexanedioic acid (also known as adipic acid). The reaction can be summarized as:
\[ \text{Cyclohexene} + \text{KMnO}_4 \rightarrow \text{Hexanedioic acid} \]

6. **Final Product**:
The final product of the reaction is hexanedioic acid (C₆H₁₀O₄), which is a dicarboxylic acid.

### Conclusion:
Cyclohexene on oxidation with concentrated KMnO₄ forms hexanedioic acid.

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