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JEE Main202427 Jan 2024Evening ShiftChemistryHaloalkanes and HaloarenesActual

Which among the following halide/s will not show S N 1 reaction:

Options

  1. AH 2 C = CH - CH 2 Cl
  2. BCH 3 - CH = CH - Cl

Correct answer

B. CH 3 - CH = CH - Cl

Step-by-step solution

Vinylic halides are organic compounds containing their halogen atom bonded to one of the two carbon atoms in the double bond present in that molecule. Vinyl halide will not show S N 1 reaction, due to very less stability of carbocation formed and partial double bond character in C — Cl bond. Since CH 3 - CH = C + H is very unstable, CH 3 - CH = CH - Cl cannot give S N 1 reaction. Hence, the answer is B.

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