In IUPAC nomenclature, ethers are named as alkoxy derivatives of benzene. The longest chain is selected as the alkoxy group, and substituents are numbered accordingly.
Step 1: Identifying the Functional Group and Parent Chain - The given structure consists of a benzene ring attached to an alkoxy (-O-R) group. - The longest alkyl chain attached to the oxygen atom is pentane (C\(_5\)H\(_{11}\)), making it a pentoxy (-O-C\(_5\)H\(_{11}\)) derivative. Step 2: Identifying Substituents and Their Positions - A methyl (-CH\(_3\)) group is present on the fourth carbon of the pentoxy chain. - The oxygen is directly attached to the benzene ring, making it an alkoxybenzene. Step 3: Naming the Compound - The correct IUPAC name follows the alkoxybenzene convention, with the longest chain numbered from the oxygen atom. - Since the methyl group is at the 4th position, the correct name is 4-Methyl pentoxybenzene. Step 4: Evaluating the Given Options - Option (1): Incorrect, as the methyl group is at position 4, not 2. - Option (2): Correct, as 4-Methyl pentoxybenzene is the correct name. - Option (3): Incorrect, as the functional group should be named as "alkoxybenzene," not "phenoxyalkane." - Option (4): Incorrect, as the methyl group is at position 4, not 2. Thus, the correct answer is
