Provide the systematic name for the following ester.

• A. propyl butanoate
• B. butyl propanoate
• C. isopropyl butanoate
• D. isobutyl propanoate

Answer: (C)

Verified step by step guidance

1. Identify the two parts of the ester: the alkyl group (from the alcohol) and the acyl group (from the carboxylic acid). The alkyl group is attached to the oxygen atom, and the acyl group contains the carbonyl (C=O) carbon.
2. Look at the alkyl group attached to the oxygen. In the image, the alkyl group is a three-carbon chain with the middle carbon connected to the oxygen, indicating an isopropyl group (a branched alkyl group).
3. Next, identify the acyl group derived from the carboxylic acid. The acyl group has four carbons in a straight chain, which corresponds to butanoate (from butanoic acid).
4. Combine the names of the alkyl group and the acyl group to form the ester name. The alkyl group name comes first, followed by the acyl group name with the '-oate' suffix.
5. Therefore, the systematic name of the ester is 'isopropyl butanoate' because the alkyl part is isopropyl and the acyl part is butanoate.