Upon heating with acidic `KMnO_4` an organic compound produces hexan – 1, 6 – dioic acid as the major product the starting compound is

Options

A. Benzene
B. Cyclohexene
C. 1– methylcyclohexene
D. 2–methylcyclohexene

Explanation

To solve the problem of determining the starting organic compound that produces hexan-1,6-dioic acid upon heating with acidic KMnO4, we can follow these steps:

### Step 1: Understand the Reaction
Acidic KMnO4 is a strong oxidizing agent. It is known to oxidize alkenes, alcohols, and other organic compounds. In this case, it is likely oxidizing a compound to form a dicarboxylic acid.

**Hint:** Consider what types of organic compounds can be oxidized to form dicarboxylic acids.

### Step 2: Identify the Product
The product given is hexan-1,6-dioic acid, which has the structure:

```
HOOC-CH2-CH2-CH2-CH2-COOH
```

This indicates that the compound must have a chain of six carbon atoms with carboxylic acid groups at both ends.

**Hint:** Think about how many carbons are in the starting compound and how they relate to the product.

### Step 3: Determine the Structure of the Starting Compound
To produce hexan-1,6-dioic acid, the starting compound must have the potential to be oxidized to this product. A suitable candidate is cyclohexane or a straight-chain alkane that can be oxidized to yield the dicarboxylic acid.

**Hint:** Consider cyclic compounds or straight-chain compounds that can be oxidized to yield the desired product.

### Step 4: Consider Possible Starting Compounds
Cyclohexane is a cyclic compound that can be oxidized to form hexan-1,6-dioic acid. When cyclohexane is subjected to oxidation, it can break down and rearrange to yield the dicarboxylic acid.

**Hint:** Think about the structure of cyclohexane and how it can be oxidized to yield the product.

### Step 5: Finalize the Starting Compound
Based on the analysis, the starting compound that can produce hexan-1,6-dioic acid upon oxidation with acidic KMnO4 is cyclohexane.

**Hint:** Verify if the oxidation of cyclohexane leads to the formation of hexan-1,6-dioic acid.

### Conclusion
The starting compound is cyclohexane.