Outline a synthesis of p-bromonitrobenzene from benzene in two steps .

Explanation

To synthesize p-bromonitrobenzene from benzene in two steps, we can follow these steps:

### Step 1: Bromination of Benzene
- **Reaction**: Benzene (C6H6) is treated with bromine (Br2) in the presence of a catalyst such as iron (Fe).
- **Mechanism**: This reaction proceeds via electrophilic aromatic substitution. The bromine molecule (Br2) is polarized in the presence of iron, generating a bromonium ion that reacts with the benzene ring.
- **Product**: The product of this reaction is bromobenzene (C6H5Br). Since bromine is an ortho-para directing group, the bromine can attach to either the ortho or para position of the benzene ring.

### Step 2: Nitration of Bromobenzene
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