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NEET 2024, Chemistry Q3: Resonance & Mesomeric Effect

NEET2024Chemistry
Q.

The most stable carbocation among the following is:

  1. A

    1

  2. B

    2

  3. C

    3

  4. D

    4

Solution

Benzylic carbocations are stabilised by resonance with the aromatic ring. A benzylic-secondary cation (option 2) enjoys both ring resonance and the inductive contribution from the methyl group, making it more stable than the benzyl primary (option 1), the acyclic secondary (option 3), and the primary allylic (option 4).

Concept behind this question

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