When methoxybenzene reacts with HI at room temperature the products formed are
Show Hint
- Iodomethane and Iodobenzene
- Iodomethane and Phenol
- Methanol and Iodobenzene
- Iodomethane and Benzene
The Correct Option is B
Solution and Explanation
Methoxybenzene (anisole) reacts with hydroiodic acid (HI) in a nucleophilic substitution reaction. The methoxy group (-OCH\(_3\)) is electron-donating and activates the aromatic ring for substitution. The reaction leads to the formation of iodomethane (CH\(_3\)I) and phenol (C\(_6\)H\(_5\)OH).
Step 2: Analyzing the options.
(A) Iodomethane and Iodobenzene: This is incorrect. Iodobenzene is not formed in this reaction.
(B) Iodomethane and Phenol: This is correct. The reaction produces iodomethane and phenol.
(C) Methanol and Iodobenzene: This is incorrect. Methanol is not formed in this reaction.
(D) Iodomethane and Benzene: This is incorrect. Benzene is not formed in this reaction.
Step 3: Conclusion.
The correct answer is (B) Iodomethane and Phenol.
Top Questions on Ethers
- What happens when C₆H₅–O–R is treated with HX?
- Which of the following reagents is required for the conversion of Benzene to methyl benzoate?
(A) Br\(_2\)/FeBr\(_3\)
(B) Mg, dry Ether
(C) CO\(_2\), H\(_3\)O\(^+\)
(D) Methanol, Conc. H\(_2\)SO\(_4\) Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
- Williamson’s synthesis of preparing dimethyl ether is a/an:
IUPAC name of the given ether is:
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