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Arrange the following compound in order ...

Arrange the following compound in order of reactivity towards `SN^(1)` reaction.
(I) `underset(Br)underset(|)(H_(2)C)-CH_(2)-CH_(2)-CH_(3)`," " (II) `H_(2)C-underset(Br)underset(|)CH-CH_(2)-CH_(3)`, " " (III) `HOC-underset(Br)underset(|)CH-CH_(2)-CH_(3)`

A

`I gt II gt III`

B

`II gt I gt III`

C

`III gt II gt I`

D

`I gt III gt II`

Text Solution

Verified by Experts

The correct Answer is:
B
Reactivity towards `SN^(1) alpha` stability of carbocation.
(I) `H_(2)overset(oplus)C-CH_(2)-CH_(2)-CH_(3)`
(II) `H_(3)C-overset(oplus)CH-CH_(2)-CH_(3)`
(III) `H-overset(O)overset(||)C-overset(oplus)CH-CH_(2)-CH_(3)`
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