According to IUPAC convention, name of the following compound is:
A
2-ethyl-4-methyl-1-cyclopentyl cyclopentane
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B
2-ethyl-1-methyl-4-cyclopentyl cyclopentane
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C
1-cyclopentyl-3-ethyl-4-methyl cyclopentane
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D
4-cyclopentyl-1-ethyl-2-methyl cyclopentane
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Solution
The correct option is D 4-cyclopentyl-1-ethyl-2-methyl cyclopentane Base chain is cyclopentane ring. The substituents are methyl, ethyl and cyclopentyl groups. Assigning least locants to them in the alphabetical order of priority, we get the IUPAC name to be 4-cyclopentyl-1-ethyl-2-methyl cyclopentane