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Arrange the following alkyl halides in d...

Arrange the following alkyl halides in decreasing order of the rate of `beta`-elimination reaction with alcoholic `KOH`.
A. `CH_(3)-underset(CH_(3))underset(|)overset(H)overset(|)(C)-CH_(2)Br`
B. `CH_(3)-CH_(2)-Br`
C. `CH_(3)-CH_(2)-CH_(2)-Br`

A

`A gt B gt C`

B

`C gt B gtA`

C

`B gt C gtA`

D

`A gt C gt B`

Text Solution

Verified by Experts

The correct Answer is:
D
The larger the number of alkyl groups attached to the double bonded carbon atoms, the more stable is the alkene and more reactive is the corresponding alkyl halide. So correct order is: `A gt C gt B`.
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