When an alkyl aryl ether (e.g., anisole) reacts with HI, which bond is preferentially cleaved, and w

Q: What is the correct answer for CBSE12?

The correct answer is A. In alkyl aryl ethers, the alkyl-oxygen bond is cleaved because the aryl-oxygen bond has partial double bond character due to resonance, making it stronger and less susceptible to cleavage. The reaction yields phenol and an alkyl halide (alkyl iodide in this case).

Q: When an alkyl aryl ether (e.g., anisole) reacts with HI, which bond is preferentially cleaved, and what are the products?

The correct answer is A. In alkyl aryl ethers, the alkyl-oxygen bond is cleaved because the aryl-oxygen bond has partial double bond character due to resonance, making it stronger and less susceptible to cleavage. The reaction yields phenol and an alkyl halide (alkyl iodide in this case).

Q: What are the options for this CBSE12 question?

A. Alkyl-oxygen bond, yielding phenol and alkyl iodide. · B. Aryl-oxygen bond, yielding aryl iodide and alcohol. · C. Both alkyl-oxygen and aryl-oxygen bonds, yielding alkyl iodide and aryl iodide. · D. No cleavage occurs.

Question

When an alkyl aryl ether (e.g., anisole) reacts with HI, which bond is preferentially cleaved, and what are the products?

FirstInTest · Accepted Answer

In alkyl aryl ethers, the alkyl-oxygen bond is cleaved because the aryl-oxygen bond has partial double bond character due to resonance, making it stronger and less susceptible to cleavage. The reaction yields phenol and an alkyl halide (alkyl iodide in this case).

Answer

Alkyl-oxygen bond, yielding phenol and alkyl iodide.

Answer

Aryl-oxygen bond, yielding aryl iodide and alcohol.

Answer

Both alkyl-oxygen and aryl-oxygen bonds, yielding alkyl iodide and aryl iodide.

Answer

No cleavage occurs.

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