Statement (I) : SN2SN2 reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product.Statement (II) : SN1SN1 reactions generally result in formation of product as racemic mixtures.In the light of the above statements, choose the correct answer from the options given below :JEE Main 2024 (08 Apr Shift 2)ABoth Statement I and Statement II are falseBStatement I is false but Statement II is trueCStatement I is true but Statement II is falseDBoth Statement I and Statement II are true
Question
Statement (I) : SN2SN2 reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product.Statement (II) : SN1SN1 reactions generally result in formation of product as racemic mixtures.In the light of the above statements, choose the correct answer from the options given below :JEE Main 2024 (08 Apr Shift 2)ABoth Statement I and Statement II are falseBStatement I is false but Statement II is trueCStatement I is true but Statement II is falseDBoth Statement I and Statement II are true
Solution
The correct answer is D. Both Statement I and Statement II are true.
Explanation:
Statement I: SN2 reactions are indeed stereospecific. This means that they proceed via a specific pathway that leads to the formation of only one stereoisomer as the product. In the case of SN2 reactions, the nucleophile attacks the substrate from the side opposite to the leaving group, leading to an inversion of configuration at the reaction center. This is known as the Walden inversion.
Statement II: SN1 reactions, on the other hand, are not stereospecific. They proceed via a planar carbocation intermediate, which can be attacked by the nucleophile from either side, leading to the formation of both possible stereoisomers. Therefore, SN1 reactions generally result in the formation of racemic mixtures.
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