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Consider the following compounds  

Hyperconjugation occurs in:

  • Option 1)

    II only

  • Option 2)

    III only

  • Option 3)

    I and III

  • Option 4)

    I only


Answers (1)


As we learnt in

Hyperconjugation or ?-? resonance or Baker and Nathan effect -

The conjugation between \alpha C-H sigma bond and adjacent  multiple bond or carbocation is called Hyperconjugation.

- wherein

It is permanent effect.


 Hyper conjugation can occur only in compound III as it have \alpha-hydrogen atoms. 


Option 1)

II only


Option 2)

III only


Option 3)

I and III


Option 4)

I only


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