Conversion of Aniline to Iodobenzene

Explanation

To convert aniline (C6H5NH2) to iodobenzene (C6H5I), we will follow a two-step process involving diazotization and substitution reactions. Here’s the step-by-step solution:

### Step 1: Diazotization of Aniline
1. **React Aniline with Sodium Nitrite and Hydrochloric Acid**:
- Mix aniline (C6H5NH2) with sodium nitrite (NaNO2) and hydrochloric acid (HCl) at a temperature of 0 to 5 degrees Celsius.
- The reaction will convert the amino group (-NH2) of aniline into a diazonium salt (C6H5N2+Cl-).

**Chemical Reaction**:
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