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AP EAMCET201726 Apr 2017Morning ShiftChemistryHaloalkanes and HaloarenesActual

Which one of the following is more reactive towards S _ N 2 reaction?

Options

  1. A( CH ₃ )₃ CX
  2. B( CH ₃ )₂ CHX
  3. CCH ₃ CH ₂ X
  4. DCH ₃ X

Correct answer

D. CH ₃ X

Step-by-step solution

Bimolecular nucleophilic substitution ( S _ N 2 ) reaction involves reaction between reactant and nucleophile simultaneously without the formation of carbocation. Less hindered species are more reactive towards S _ N 2 reaction. As CH ₃ X is least hindered alkyl halide, it will show more fast reaction towards S _ N 2 reaction.

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