Which among the following are correctly matched?
(A) \(C_6H_5OCH_2CH_3\) – Phenetole
(B) \(C_6H_5O(CH_2)_6CH_3\) – Heptyl phenyl ether
(C) \(C_6H_5OCH_3\) – Dimethyl ether
(D) \(C_2H_5OCH_2CH_3\) – Methyl ethyl ether
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A and B only
The common name of an ether lists the two alkyl or aryl groups attached to oxygen, in alphabetical order, followed by the word ether. A few aromatic ethers have special names: \( \ce{C6H5OCH3} \) is anisole (methyl phenyl ether) and \( \ce{C6H5OC2H5} \) is phenetole (ethyl phenyl ether).
(A) \( \ce{C6H5OCH2CH3} \) — Phenetole — Correct. Phenyl and ethyl on oxygen: ethyl phenyl ether, called phenetole (IUPAC: ethoxybenzene).
(B) \( \ce{C6H5O(CH2)6CH3} \) — Heptyl phenyl ether — Correct. \( \ce{(CH2)6CH3} \) is a seven-carbon chain, the n-heptyl group (IUPAC: 1-phenoxyheptane).
(C) \( \ce{C6H5OCH3} \) — Dimethyl ether — Incorrect. One group is phenyl, so this is methyl phenyl ether (anisole). Dimethyl ether is \( \ce{CH3OCH3} \).
(D) \( \ce{C2H5OCH2CH3} \) — Methyl ethyl ether — Incorrect. \( \ce{CH2CH3} \) is also an ethyl group, so the compound is \( \ce{C2H5OC2H5} \), diethyl ether. Ethyl methyl ether is \( \ce{CH3OC2H5} \).
NCERT (2026-27 edition):
Nomenclature – …
