The carbocation below undergo favourable rearrangement. How many hyperconjugation structure exist in the most stable carbocation obtained after rearrangement?

Question

The carbocation below undergo favourable rearrangement. How many hyperconjugation structure exist in the most stable carbocation obtained after rearrangement? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Ethyl shift would be preferred over methyl shift as former would leave 7 α-H to positively charged carbon while later would leave only 6 α-H to positively charged carbon as:

Q. The carbocation below undergo favourable rearrangement. How many hyperconjugation structure exist in the most stable carbocation obtained after rearrangement?

Ethyl shift would be preferred over methyl shift as former would leave $7 α - H$ to positively charged carbon while later would leave only $6 α - H$ to positively charged carbon as:

Q. The carbocation below undergo favourable rearrangement. How many hyperconjugation structure exist in the most stable carbocation obtained after rearrangement?

Ethyl shift would be preferred over methyl shift as former would leave 7α−H to positively charged carbon while later would leave only 6α−H to positively charged carbon as:

Ethyl shift would be preferred over methyl shift as former would leave $7 α - H$ to positively charged carbon while later would leave only $6 α - H$ to positively charged carbon as: