(R)-2-bromobutane upon treatment with aq. , N | vedclass

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Question

(B) $(R)-2-$bromobutane is a secondary $(2^{\circ})$ alkyl halide. When treated with $aq. \, NaOH$,it undergoes a nucleophilic substitution reaction.

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Vedclass · Answer

(B) $(R)-2-$bromobutane is a secondary $(2^{\circ})$ alkyl halide. When treated with $aq. \, NaOH$,it undergoes a nucleophilic substitution reaction. Since it is a secondary halide,the reaction proceeds primarily via the $S_N1$ mechanism,which involves the formation of a planar carbocation intermediate. The nucleophile $(OH^-)$ can attack the carbocation from either side with equal probability,leading to the formation of both $(R)$ and $(S)$ enantiomers of $2-$butanol in equal amounts. This process is known as racemisation,and the resulting product is a racemic mixture.

$(R)-2-$bromobutane upon treatment with $aq. \, NaOH$ gives

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