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Hyperconjugation

Does E2 react...

Question

Does E2 reaction proceeds with

3°>2°>1° or

1°>2°>3° of alkyl halide.And what's the reason for it?

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Solution

E2 reaction proceeds with

3°>2°>1°

reason :-. In the transition state, the double bond is partially formed, so increasing the stability of the double bond with alkyl substituents stabilizes the transition state. so 3° is more reactive

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Q. The correct increasing order of the rate of reaction for alkyl halides undergoing

E_{1}

E_{2}

reaction respectively is:
Here,

1^{\circ} is primary alkyl halide

2^{\circ} is secondary alkyl halide

3^{\circ} is tertiary alkyl halide

Q. Assertion :Rate of reaction of alkyl halide in Williamson's synthesis reaction is

1^{\circ} R X > 2^{\circ} R X > 3^{\circ} R X

. Reason: It is a type of bimolecular substitution reaction

(S_{N} 2)

.

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Q. Which of the following reaction does not yield an alkyl halide?

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