Aniline reacts with acetaldehyde to form

Options

A. Schiff's base
B. Carbylamine
C. Immine
D. None of these

Explanation

To determine the product formed when aniline reacts with acetaldehyde, we can follow these steps:

### Step 1: Identify the Reactants
- Aniline is a primary amine with the structure C6H5NH2.
- Acetaldehyde is a carbonyl compound with the structure CH3CHO.

### Step 2: Understand the Reaction Mechanism
- When a primary amine (like aniline) reacts with an aldehyde (like acetaldehyde), they typically undergo a condensation reaction to form an imine (also known as a Schiff base).
- The reaction involves the nucleophilic attack of the amine on the carbonyl carbon of the aldehyde.

### Step 3: Form the Intermediate
- The nitrogen atom in aniline attacks the carbonyl carbon of acetaldehyde, leading to the formation of a tetrahedral intermediate.

### Step 4: Dehydration
- The tetrahedral intermediate then undergoes dehydration (loss of water) to form the imine.
- The general structure of the imine formed from aniline and acetaldehyde is C6H5N=CH(CH3).

### Step 5: Write the Final Product
- The final product of the reaction is an imine, specifically N-ethylideneaniline, which can be represented as:
\[ C6H5N=CH(CH3) \]

### Conclusion
Thus, when aniline reacts with acetaldehyde, the product formed is an imine (Schiff base).

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