Which of the following reacts with Grignard reagent to yield a primary amine ?

Options

A. `CH_(3)ONH_(2)`
B. `CINH_(2)`
C. Both of these
D. None of these

Explanation

To determine which of the given compounds reacts with Grignard reagent to yield a primary amine, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the Compounds**: The question provides four options. We will analyze each compound to see if it can react with a Grignard reagent (RMgX) to form a primary amine.

2. **First Compound: CH3ONH2 (Methoxyamine)**:
- When CH3ONH2 reacts with a Grignard reagent (RMgX), the ether bond can be attacked by the Grignard reagent.
- The reaction can be represented as:
\[ CH3ONH2 + RMgX \rightarrow RNHMgX + RHMgOCH3 \]
- Upon hydrolysis (reaction with water), the product RNHMgX will yield a primary amine:
\[ RNHMgX + H3O^+ \rightarrow RNH2 + MgX(OH) \]
- **Conclusion**: This compound does yield a primary amine.

3. **Second Compound: ClNH2 (Chloroamine)**:
- When ClNH2 reacts with a Grignard reagent, the chlorine atom can be replaced by the R group from the Grignard reagent:
\[ ClNH2 + RMgX \rightarrow RNH2 + MgXCl \]
- **Conclusion**: This compound also yields a primary amine.

4. **Third Option**: Both of the above compounds yield primary amines.
- Since both CH3ONH2 and ClNH2 react with Grignard reagents to form primary amines, the third option stating that both are correct is valid.

5. **Fourth Option**: None of these.
- Since we have established that both the first and second options yield primary amines, this option is incorrect.

### Final Answer:
The correct answer is that both CH3ONH2 and ClNH2 react with Grignard reagents to yield primary amines. Therefore, the answer is the third option.