Which of the following alkyl halides gives the same product in both S N 1 - S N 2 reactions-I R - CH 3- CH Br CH 2 CH 3II C 6 H 5 CH 2 BrIIIIVA- I- IIIB- II - IVC- III- IVD- I- IV

The correct option is B II , IVII amp; IV are achiral molecules amp; their structures do not permit rearrangement. Hence, they give same product in S_N1 ...

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Standard XII

Chemistry

Structure and Physical Properties of Ethers

Which of the ...

Question

Which of the following alkyl halides gives the same product in both $S_{N} 1 & S_{N} 2$ reactions?

I, III

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II , IV

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III, IV

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I, IV

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Solution

The correct option is B II , IV
II & IV are achiral molecules & their structures do not permit rearrangement. Hence, they give same product in $S_{N} 1 & S_{N} 2$ reactions. However, I & III are chiral molecules & hence, give enantiomerically pure products in $S_{N} 2$ reactions and racemic mixtures in $S_{N} 1$ .

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Similar questions

Q. The

S_{N} 1

reactivity of the following halides will be in the order:
(i)

(C H_{3})_{3} C B r

(ii)

(C_{6} H_{5})_{2} C H B r

(iii)

(C_{6} H_{5})_{2} C (C H_{3}) B r

(iv)

(C H_{3})_{2} C H B r

(v)

C_{2} H_{5} B r

Q. Identify the rate of reaction of given compounds in

E_{2}

reactions

Compounds showing cannizaro's reaction are
(i) $C H_{3} C H_{2} C H O$ (ii) $C H C l_{2} C H O$ (iii) $(C H_{3})_{3} C - C H O$ (iv) $C_{6} H_{5} C H O$

Compounds showing cannizaro’s reaction are

$(i) C H_{3} C H_{2} C H O (i i) C H C l_{2} C H O (i i i) (C H_{3})_{3} C - C H O (i v) C_{6} H_{5} C H O$

The priority order of the following substituent will be:

-OCH₃ ; -N(CH₃)₂ ; -CH₃ ; -H

I II III IV

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Which of the following alkyl halides gives the same product in both SN1 & SN2 reactions?

The correct option is B II , IVII & IV are achiral molecules & their structures do not permit rearrangement. Hence, they give same product in SN1 & SN2 reactions. However, I & III are chiral molecules & hence, give enantiomerically pure products in SN2 reactions and racemic mixtures in SN1.

Which of the following alkyl halides gives the same product in both $S_{N} 1 & S_{N} 2$ reactions?