객관식
What is the correct IUPAC name for the compound with the structure ?
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4. Alkanes and Cycloalkanes
IUPAC Naming
객관식
Given the following skeletal (line-bond) structure: a six-carbon straight chain with a methyl group attached to carbon , what is the correct IUPAC name for this compound?
A
,-Dimethylpentane
B
-Ethylpentane
C
-Methylhexane
D
-Methylhexane
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검증된 단계별 안내1
Identify the longest continuous carbon chain in the skeletal structure. Since the chain has six carbons, the parent name will be based on 'hexane'.
Locate the substituent groups attached to the main chain. Here, there is a methyl group attached to carbon 3 of the six-carbon chain.
Number the carbon chain from the end nearest to the substituent to give the substituent the lowest possible number. In this case, numbering from either end gives the methyl group at carbon 3.
Combine the substituent name and position with the parent chain name. Since there is one methyl group at carbon 3, the name becomes '3-methylhexane'.
Verify that the name follows IUPAC rules: the substituent is named as a prefix with its position number, and the parent chain name reflects the longest chain. Confirm that other options like '2,3-dimethylpentane' or '3-ethylpentane' do not match the given structure.
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