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InterviewSolution
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A primary alkyl halide would prefer to undergo :-A. `S_(N)1` reactionB. `S_(N)2` reactionC. `alpha`-eliminationD. racemisation |
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Answer» Correct Answer - B A primary alkyl halide would prefer to undergo `S_(N)2` reaction. (a) `S_(N)2` reactions occur only if the intermediate carbocation is stable i.e., `3^(@)` carbocation. (b) `S_(N)2` reactions occur if there is less steric hinderance on to the `alpha`-carbon of alkyl halide. In case of primary alkyl halides, carbocation is highly unstable and steric hinderance is very less, Sa, primary alkyl halide would prefer to undergo `S_(N)2` reaction. (c) In `alpha`-elimination, proton and the leaving group are present on same atom. (d) Racemisation is the process of conversion of enantiomer into a racemic mixture. |
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