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Increasing order of reactivity of the fo...

Increasing order of reactivity of the following alkyl halides in the Williamson's synthesis is
I. `CH_(2)=CHCH_(2)Cl`
II. `CH_(3)CH_(2)CH_(2)Br`
III. `(CH_(3))_(3)C CH_(2)Br`
IV. `CH_(3)CH_(2)CH_(2)Cl`

A

`IIltIIIltIVltI`

B

`IIIltIIltIVltI`

C

`IVltIIIltIltII`

D

`IIIltIVltIIltI`

Text Solution

Verified by Experts

The correct Answer is:
D
Order of reactivity of different alkyl halides towards Williamson.s synthesis is Allyl `gt1^(@)gt2^(@)gt3^(@)`.
For same alkyl group order of reactivity is `R-IgtR-BrgtR-Cl`.
Thus order of reactivity of given alkyl halides towards Williamson.s synthesis can be given as
`CH_(2)=CHCH_(2)Cl("Allyl")gtCH_(3)CH_(2)CH_(2)Br(1^(@)"bromide")gtCH_(3)CH_(2)CH_(2)Cl(1^(@)"chloride")gt(CH_(3))_(3)C CH_(2)Br("Sterically hindered")`
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Knowledge Check

  • Increasing order of reactivity of the following alkyl halide in the Willamson's synthesis is underset(I)(CH_2=CHCH_2CI) , underset(II)(CH_3CH_2CH_2Br) , underset(III)((CH_(3))C CH_2Br) , underset(IV)(CH_3CH_2CH_2CI)

    A
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    B
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    C
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    D
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  • Give the decreasing order of reactivity of the following alkyl halides in the Williamson's reaction. i. (CH_(3))_(3)C-CH_(2)Br ii. CICH_(2)CH=CH_(2) iii. (CICH_(2)CH_(2)CH_(3) iv. BrCH_(2)CH_(2)CH_(3)

    A
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    A
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    B
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    C
    `(I)lt(III)lt(II)`
    D
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