MCQ
Consider the following compounds
Hyper conjugation occurs in :
Hyper conjugation occurs in :
- ✓$\text{III}$
- B$\text{I}$ and $\text{III}$
- C$\text{I}$
- D$\text{II}$
✓
Answer
Correct option: A.
$\text{III}$
Because it has $'H\ '$ in conjugation with free radical.
OR
Hyperconjugation occurs through the $H-$ atoms present on the carbon atom next to the double bond i.e alpha hydrogen atoms. There is no alpha $-H$ in the structure $\text{I}$ and $\text{II}.$
So, hyperconjugation occurs in structure $\text{III}$ only ie.
OR
Hyperconjugation occurs through the $H-$ atoms present on the carbon atom next to the double bond i.e alpha hydrogen atoms. There is no alpha $-H$ in the structure $\text{I}$ and $\text{II}.$
So, hyperconjugation occurs in structure $\text{III}$ only ie.
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