In S N 2 reactions, the correct order of reactivity for the following compounds : CH 3 Cl, CH 3 CH 2 Cl, (CH…

In SN2 reactions, the correct order of reactivity for the following compounds :
CH3Cl, CH3CH2Cl, (CH3)2CHCl and (CH3)3CCl is :
  1. CH3Cl > (CH3)2CHCl > CH3CH2Cl > (CH3)3CCl
  2. CH3Cl > CH3CH2Cl > (CH3)2CHCl > (CH3)3CCl
  3. CH3CH2Cl > CH3Cl > (CH3)2CHCl > (CH3)3CCl
  4. (CH3)2CHCl > CH3CH2Cl > CH3Cl > (CH3)3CCl

Solution

SN2 involves the formation of a pentavalent intermediate, and the reactivity depends on steric hindrance. Lesser the steric hindrance, more is the reactivity of S N 2 .

Asked in: JEE Main 2014 (06 Apr)

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