In the following reaction A is:
Aldehydes, Ketones & Carboxylic Acids · Class 12 · JEE Main Previous Year Question
In the following reaction A is:
- a✓
- b
- c
- d
Step 1: Identify the reaction The reaction shown involves a cyclic compound A undergoing reactions that ultimately identify the ring structure. The reactions include free radical bromination, dehydrohalogenation, ozonolysis and likely aldol condensation in the last step.
Step 2: Work backward from the product
Answer: Option (a) — Cyclohexane
Key Points to Remember:
- Cyclohexane is the most stable cycloalkane (no angle or torsional strain in chair form)
- Ring-opening reactions of cycloalkanes produce linear dicarboxylic acids
- Identification of ring size from ozonolysis: count carbons in product
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