How will you bring about the following conversion ?
` 4-`nitroaniline to `1,2,3`-tribromobensene

Explanation

To convert 4-nitroaniline to 1,2,3-tribromobenzene, we can follow these steps:

### Step 1: Bromination of 4-Nitroaniline
- **Reaction**: Treat 4-nitroaniline with bromine in the presence of acetic acid.
- **Outcome**: The amino group (-NH2) directs bromination to the ortho and para positions. Therefore, we will get 2-bromo-4-nitroaniline and 4-bromo-4-nitroaniline.

### Step 2: Diazotization
- **Reaction**: Perform diazotization by treating the product from Step 1 with sodium nitrite (NaNO2) and hydrochloric acid (HCl) at low temperatures (0-5 °C).
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