Question

Answer the question on the basis of information given below:
"Stability of carbocation's depends upon the electron releasing inductive effect of groups adjacent to positively charged carbon atom involvement of neighboring groups in hyperconjugation and resonance."
Which of the following ions is more stable? Use resonance to explain your answer.

Answer 1

Structure A is more stable than B. Carbocation A is more Planar and $\pi$ electrons from the ring shift to side group $C{H}_2^{+}$ and stabilized by resonance. Structure (B) is non-planar and does not undergo resonance. Double bond is more stable with in the ring as compared to side chain.