The reaction of primary amine with chloroform and ethanolic solution of KOH is called:

Options

A. Hofmann reaction
B. Reimer-Tiemann reaction
C. Carbylamine reaction
D. Kolbe reaction

Explanation

To solve the question regarding the reaction of primary amines with chloroform and ethanolic KOH, we can break down the process step by step:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are primary amines (RNH2) and chloroform (CHCl3) in the presence of ethanolic KOH.

2. **Understand the Reaction Type**:
- This reaction is known as the carbylamine reaction. It specifically involves primary amines reacting with chloroform and a strong base (KOH) to form isocyanides (or isonitriles).

3. **Reaction Mechanism**:
- When a primary amine reacts with chloroform in the presence of alcoholic KOH, the amine first reacts with chloroform to form an intermediate.
- This intermediate then undergoes dehydrohalogenation facilitated by KOH, leading to the formation of isocyanide (RNC).

4. **Products Formed**:
- The reaction produces isocyanides, which are characterized by a foul odor. Additionally, byproducts of the reaction include potassium chloride (KCl) and water (H2O).

5. **Conclusion**:
- The overall reaction can be summarized as:
\[ \text{RNH}_2 + \text{CHCl}_3 + \text{KOH (alcoholic)} \rightarrow \text{RNC} + 3 \text{KCl} + 3 \text{H}_2\text{O} \]
- Therefore, the reaction of primary amines with chloroform and ethanolic KOH is called the **carbylamine reaction**.

### Final Answer:
The reaction of primary amine with chloroform and ethanolic solution of KOH is called the **carbylamine reaction**.

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