Arrange the following alkyl halides in decreasing order of the rate of -elimination reaction with alcoholic KOH- I CH 3 - H - CH 3 - C -CH 2 BrII CH3-CH2-BrIII CH3-CH2-CH2-Br

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Introduction to E2 Mechanism

Arrange the f...

Question

Arrange the following alkyl halides in decreasing order of the rate of $β$ -elimination reaction with alcoholic $K O H$ .
(I) $C H_{3} - H | C | C H_{3} - C H_{2} B r$
(II) $C H_{3} - C H_{2} - B r$
(III) $C H_{3} - C H_{2} - C H_{2} - B r$

I > I I > I I I

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I I I > I I > I

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I I > I I I > I

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I > I I I > I I

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β

{C H}_{3} - H | C | {C H}_{3} - {C H}_{2} B r

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

S_{N} 2

B r - C H_{2} - C H_{2} - B r

N = C - C H_{2} - B r

C H_{3} - C | B r H - C H_{3}

C H_{3} - C H_{2} - B r

β -

C H_{3} - C H_{2} - B r

C H_{3} - C H_{2} - C H_{2} - B r

(i) C H_{3} - + C H - C H_{2} - O C H_{3}

(i i) C H_{3} - + C H - C H_{2} - C H_{3}

(i i i) C H_{3} - + C H - O | | C - C H_{3}

S_{N} 1

C_{6} H_{5} - C | H C H_{3} - B r

C_{6} H_{5} - C H_{2} - B r

C_{6} H_{5} - C | H C H_{3} - I

C_{6} H_{5} - C H_{2} - I

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