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AP EAMCET201920 Apr 2019Morning ShiftChemistryHaloalkanes and HaloarenesActual

Arrange the following organic halides in correct order of reactivity towards ( S _ N 2 ) displacement.

Options

  1. A(P > Q > R )
  2. B(R > P > Q )
  3. C(P > R > Q )
  4. D(Q > R > P )

Correct answer

D. (Q > R > P )

Step-by-step solution

(3^ ) alkyl halide (highly sterically hindered) (1^ ) alkyl halide (least sterically hindered) (R) (2^ ) alkyl halide Rate of ( S _ N 2 ) reaction ( 1 sterically hindrance ) ( ) Rate is (1^ > 2^ > 3^ ) alkyl halide. Hence, (Q > R > P ) is correct answer.

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