The major product of the following reaction is:
Hydrocarbons · Class 11 · JEE Main Previous Year Question
The major product of the following reaction is:
- a
- b✓
- c
- d
This question might look easy at first, but if you think deeper, it presents the possibility of multiple mechanisms. Now let us try to understand what different mechanisms will give us and why B option should be the correct answer. Always remember that in organic chemistry, a very slight change in reaction conditions can lead to a totally different product, so nothing can be an absolute answer. We are just trying to understand the most probable answer based on JEE syllabus and the limited context we are supposed to apply.
Answer: Option (b)
Key Points to Remember:
- Intramolecular Friedel-Crafts: forms the most stable ring (6 > 5-membered)
- directs to ortho/para positions
- Para substitution preferred (less steric hindrance)
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