Question

In the above reaction product B is:
Product B is

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

The given chemical reaction involves the conversion of benzyl alcohol to benzyl iodide. Here is the step-by-step explanation:

1. **Reaction with HCl:** 

The primary alcohol group (CH₂OH) in benzyl alcohol reacts with hydrochloric acid (HCl) to form benzyl chloride (compound A) through a nucleophilic substitution reaction.

2. **Mechanism:**

• The hydroxyl group (-OH) is substituted by a chlorine atom from HCl, resulting in benzyl chloride (C₆H₅-CH₂Cl) as the intermediate product A.

3. **Reaction with NaI:**

Next, benzyl chloride reacts with sodium iodide (NaI) in an SN2 reaction mechanism to form benzyl iodide (compound B).

• The chlorine atom in benzyl chloride is substituted by an iodine atom from sodium iodide.

4. **Final Product (B):**

The final product, compound B, is benzyl iodide (C₆H₅-CH₂I), represented by the option CH₂I-OH.

This is consistent with the mechanism for the formation of iodoalkanes from chloroalkanes using sodium iodide (Finkelstein reaction), where iodide ions, being strong nucleophiles, displace the chlorine atom.

Answer 2

Product B is \(4-iodomethylphenol.\)

The correct answer is (A):