`Ph-overset(O)overset(||)C-NH_2overset(POCl_3)rarr(A),` Product (A) is

Options

A. `Ph-NH_2`
B. `Ph-CH_2-NH_2`
C. `Ph-overset(OH)overset(|)(CH)-NH_2`
D. `Ph-C-=N`

Answer

To solve the question regarding the reaction of benzamide with POCl3, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactant given is benzamide, which has the structure \( \text{C}_6\text{H}_5\text{C(O)NH}_2 \) (a benzene ring with a carboxamide group).

2. **Understand the Role of POCl3**:
- POCl3 (phosphorus oxychloride) is a dehydrating agent. It is commonly used to remove water from compounds.

3. **Reaction Mechanism**:
- When benzamide reacts with POCl3, the reaction involves the removal of a water molecule (dehydration). The amide group (–C(O)NH2) will lose a water molecule (H2O) to form a nitrile group (–C≡N).

4. **Formation of the Product**:
- The product formed from the dehydration of benzamide is benzonitrile, which has the structure \( \text{C}_6\text{H}_5\text{C} \equiv \text{N} \) (a benzene ring with a cyano group).

5. **Final Product**:
- Therefore, the product (A) formed from the reaction of benzamide with POCl3 is benzonitrile.

### Conclusion:
The correct answer is that product (A) is **benzonitrile**.