MCQ
In an ${{S}_{{{N}^{1}}}}$ reaction on chiral centres, there is
  • inversion more than retention leading to partial racemisation
  • B
    $100\%$ retention
  • C
    $100\%$ inversion
  • D
    $100\% $ racemisation.

Answer

Correct option: A.
inversion more than retention leading to partial racemisation
a
${{S}_{{{N}^{1}}}}$ reaction gives racemic mixture with slight predominance of that isomer which corresponds to inversion because

${{S}_{{{N}^{1}}}}$ also depends upon the degree of'shielding' of the front side of the reacting carbon.

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