Which of the following amine will not respond to carbylamine reaction ?

Options

A. `(CH_3CH_2)_2NH`
B. `(CH_3)_3NH`
C. `C_6H_5NH_2`
D. `(CH_3)_3N`

Answer

To determine which amine will not respond to the carbylamine reaction, we need to understand the nature of the carbylamine reaction and the types of amines involved.

### Step-by-Step Solution:

1. **Understanding the Carbylamine Reaction**:
- The carbylamine reaction is a chemical reaction that is characteristic of primary (1°) amines. In this reaction, a primary amine reacts with chloroform (CHCl3) in the presence of a strong base (usually alcoholic KOH) to form an isocyanide (carbylamine).

2. **Identifying the Types of Amines**:
- Amines can be classified into three categories based on the number of carbon groups attached to the nitrogen atom:
- **Primary amines (1°)**: One carbon group attached to the nitrogen (e.g., RNH2).
- **Secondary amines (2°)**: Two carbon groups attached to the nitrogen (e.g., R2NH).
- **Tertiary amines (3°)**: Three carbon groups attached to the nitrogen (e.g., R3N).

3. **Analyzing the Given Options**:
- Let's analyze the options provided:
1. **Option 1**: CH3CH2NH (This is a primary amine)
2. **Option 2**: CH3(CH2)2NH (This is a secondary amine)
3. **Option 3**: C6H5NH2 (This is a primary amine, specifically an aromatic amine)
4. **Option 4**: (CH3)3N (This is a tertiary amine)

4. **Determining Which Amines Respond to the Carbylamine Reaction**:
- Primary amines (like CH3CH2NH and C6H5NH2) will respond to the carbylamine reaction.
- Secondary amines (like CH3(CH2)2NH) and tertiary amines (like (CH3)3N) will not respond to the carbylamine reaction.

5. **Conclusion**:
- From the analysis, we see that options 2 and 4 (the secondary and tertiary amines) will not respond to the carbylamine reaction. However, since the question asks for which amine will not respond, we can conclude that both options 2 and 4 are correct. If we need to choose one, we can select option 4, which is a tertiary amine.

### Final Answer:
**The amine that will not respond to the carbylamine reaction is (CH3)3N (Option 4).**