What is the name of a cyclic ester?

• A. Cycloester
• B. Lactam
• C. Lactone
• D. esteroid

Answer: (C)

Verified step by step guidance

1. Understand the concept of cyclic esters: Cyclic esters are a type of organic compound where the ester functional group is part of a ring structure.
2. Recognize the naming convention: Cyclic esters are commonly referred to as 'lactones'. This term is derived from the Latin word 'lac', meaning milk, as these compounds were first isolated from milk.
3. Differentiate between similar terms: While 'lactam' refers to cyclic amides, 'lactone' specifically refers to cyclic esters. It's important to distinguish between these terms to avoid confusion.
4. Identify the structure: A lactone is formed when a hydroxyl group and a carboxylic acid group within the same molecule react to form a ring, releasing a molecule of water.
5. Apply this knowledge: When asked for the name of a cyclic ester, recall that the correct term is 'lactone', not 'cycloester' or 'esteroid'.