Which of the following amine will be prepared by Gabriel phthalimide reaction?

Options

A. n-butylamine
B. triethylamine
C. t-butylamine
D. neo-pentylamine

Answer

To determine which amine can be prepared by the Gabriel phthalimide reaction, we first need to understand the key aspects of this reaction.

### Step-by-Step Solution:

1. **Understand the Gabriel Phthalimide Reaction**:
The Gabriel phthalimide reaction is a method used to synthesize primary amines. It involves the reaction of phthalimide with an alkyl halide, leading to the formation of a primary amine and a phthalic acid salt.

2. **Identify the Reactants**:
In this reaction, phthalimide (which can be represented as C6H4(CO)2N) is treated with an alkyl halide (R-X, where R is an alkyl group and X is a halogen). The phthalimide is deprotonated to form a phthalimide anion, which then acts as a nucleophile.

3. **Recognize the Product**:
The reaction results in the formation of a primary amine (R-NH2) and a by-product, which is a salt of phthalic acid (KX, where K is a metal ion).

4. **Evaluate the Given Amines**:
The options provided include:
- N-butyl amine
- Triethyl amine
- Tertiary butyl amine
- Neopentyl amine

5. **Classify Each Amine**:
- **N-butyl amine**: This is a primary amine (R-NH2).
- **Triethyl amine**: This is a tertiary amine (R3N).
- **Tertiary butyl amine**: This is also a tertiary amine (R3N).
- **Neopentyl amine**: This is a primary amine (R-NH2).

6. **Determine the Correct Answer**:
The Gabriel phthalimide reaction specifically yields primary amines. Among the options, N-butyl amine is a primary amine, while triethyl amine and tertiary butyl amine are tertiary amines, and neopentyl amine is also a primary amine. However, the key point is that the Gabriel reaction is designed to produce a primary amine from the reaction of phthalimide with an alkyl halide.

7. **Conclusion**:
The correct answer is **N-butyl amine**, as it is the primary amine that can be synthesized using the Gabriel phthalimide reaction.