In Schotten-Baumann reaction, aniline is heated with .........

Explanation

### Step-by-Step Solution:

1. **Identify the Reactants**: The Schotten-Baumann reaction involves aniline (C6H5NH2) and benzoyl chloride (C6H5COCl).

2. **Understanding the Reaction Mechanism**: In this reaction, the nitrogen atom in aniline has a lone pair of electrons, which makes it a nucleophile. Benzoyl chloride contains a carbonyl group (C=O) and a chlorine atom (Cl), where the carbon atom is electrophilic due to the electron-withdrawing effect of the chlorine.

3. **Nucleophilic Attack**: The lone pair of electrons on the nitrogen atom of aniline attacks the electrophilic carbon atom of benzoyl chloride. This forms a tetrahedral intermediate.

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