Diphenyls are potential threat to the envioronment. How are these produced from aryl halides?

Explanation

To understand how diphenyls are produced from aryl halides, we can break down the process step by step:

### Step 1: Understanding Aryl Halides
Aryl halides are organic compounds that contain a halogen atom (like chlorine, bromine, or iodine) attached to an aromatic ring. These compounds are important precursors in organic synthesis.

**Hint:** Aryl halides have the general formula Ar-X, where Ar is an aryl group and X is a halogen.

### Step 2: The Fittig Reaction
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