Question

Hyperconjugation is more pronounced in
(a) 2-methylpropene
(b) but-2-ene
(c) 2, 3-dimethylbut-2-ene
(d) 2-methylbut-2-ene

Answer 1

(c) 2, 3-dimethylbut-2-ene is The Correct Option

Answer 2

The hyper conjugation- is more pronounced in option (c).

which is 2,3-dimethylbut-2-ene.

Hyper conjugation is the stabilising interaction that results from the interaction of the electrons in a σ-bond .

eg Hyper conjugation in propene.

It is a permanent effect in which localisation of σ electrons in C-H bond.

In hyper conjugation $\alpha -n$ will be maximum.

In option a it is 6

In option b also it is 6

In option c it is 12

in option d it is 9

In the above values the greater number is 12 which is option c.

The major application of hyper conjugation is that it explains the stability of alkenes.

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