Assertion : Tert. Butyl amine can be formed by Gabriel phthalimide synthesis
Reason : It follow `S_(N)1` mechanism

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that "Tert. Butyl amine can be formed by Gabriel phthalimide synthesis."

- **Analysis**: The Gabriel phthalimide synthesis is primarily used for the preparation of primary amines. It involves the reaction of phthalimide with a suitable alkyl halide in the presence of a strong base. Tertiary butyl amine (tert-butyl amine) is a tertiary amine, which cannot be synthesized using this method because the Gabriel synthesis does not yield tertiary amines.

### Step 2: Understand the Reason
The reason states that "It follows SN1 mechanism."

- **Analysis**: The Gabriel phthalimide synthesis actually follows an SN2 mechanism, not SN1. In SN2 reactions, the nucleophile attacks the electrophile in a single concerted step, which is characteristic of the mechanism used in Gabriel synthesis. Therefore, this statement is also incorrect.

### Step 3: Conclusion
Both the assertion and the reason are false. The assertion is false because tert-butyl amine cannot be formed by Gabriel phthalimide synthesis, and the reason is false because the mechanism involved is SN2, not SN1.

### Final Answer
Both the assertion and the reason are false.

---