Question

Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The Correct Option is D

To solve this problem, we need to identify the compounds A and B based on the reactions given:

1. Reaction with Conc. HI: The starting compound is an ether, likely an aryl alkyl ether. When heated with concentrated HI, ethers typically undergo cleavage to form alcohols and alkyl iodides. In this case, the reaction produces a hydroxy compound A.
2. Structure of A: The given ether structure suggests that the hydroxy compound A is phenol (C₆H₅OH).
3. Reaction with Zn dust: When phenol is heated with zinc dust, it undergoes a reduction to form benzene (compound B).
4. Conclusion: Based on these reactions, compound A is phenol, and compound B is benzene. This matches the correct answer from the given options.

Therefore, the compounds are identified as follows:

• Compound A: Phenol (C₆H₅OH) 
• Compound B: Benzene (C₆H₆)