What is the correct IUPAC name of the shown compound?(a) 2-Carboxylmethylcyclopentane(b) 2-Methylcyclopentanecarboxylic acid(c) 2-Methylcyclopentanoic acid(d) (2-Methylcyclopentyl)carboxylic acidI had been asked this question during an interview.Question is taken from Nomenclature and Structure of Carboxyl Groups topic in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

What is the correct IUPAC name of the shown compound?(a) 2-Carboxylmet

1.	What is the correct IUPAC name of the shown compound?(a) 2-Carboxylmethylcyclopentane(b) 2-Methylcyclopentanecarboxylic acid(c) 2-Methylcyclopentanoic acid(d) (2-Methylcyclopentyl)carboxylic acidI had been asked this question during an interview.Question is taken from Nomenclature and Structure of Carboxyl Groups topic in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12
Answer» CORRECT option is (B) 2-Methylcyclopentanecarboxylic acid Easiest explanation: The compound is a cyclic carboxylic acid with five carbon atoms in the cyclic RING and one carboxyl group. The methyl group is present as a substituent at the ADJACENT position on the ring. Hence, it is NAMED as a derivative of cyclopentanecarboxylic acid.

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