See image — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

Step 1 - Identify the parent acid portion: The left side of the ester shows a cyclopropane ring directly bonded to a C=O group. This is the acyl (acid) portion, derived from cyclopropanecarboxylic acid. Its ester name contribution is 'cyclopropanecarboxylate'. Step 2 - Identify the alcohol portion: The right side of the oxygen shows a -CH2- group attached to a cyclobutane ring. This -CH2- is a methylene bridge connecting oxygen to cyclobutane. The alcohol from which this derives is cyclobutylmethanol (cyclobutyl-CH2-OH). In ester nomenclature, this fragment is named as the alkyl group: 'cyclobutylmethyl'. Step 3 - Combine the two parts: In IUPAC ester nomenclature, the alkyl group from the alcohol comes first, followed by the name of the carboxylate. Combining 'cyclobutylmethyl' + 'cyclopropanecarboxylate' gives cyclobutylmethyl cyclopropanecarboxylate. Step 4 - Verify connectivity: The structure is cyclopropane-C(=O)-O-CH2-C4H7 (cyclobutyl), confirming the name. No other options are present to eliminate, but alternative incorrect names might confuse the acid and alcohol portions or misidentify the ring sizes. Therefore, the correct answer is cyclobutylmethyl cyclopropanecarboxylate.