CH_3-CH_2-CH_2-CH_3 xrightarrow{Br_2/hv} Majo | vedclass

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(A) The reaction of $n$-butane with $Br_2$ in the presence of $hv$ (light) proceeds via a free radical mechanism.The abstraction of a secondary hydrog

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Racemic mixture

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(A) The reaction of $n$-butane with $Br_2$ in the presence of $hv$ (light) proceeds via a free radical mechanism.The abstraction of a secondary hydrogen atom is more favorable than a primary hydrogen atom due to the greater stability of the $2^o$ alkyl radical.The intermediate $CH_3-CH^{\bullet}-CH_2-CH_3$ is $sp^2$-hybridized and planar.Attack of $Br_2$ on either face of the planar radical leads to the formation of both enantiomers of $2$-bromobutane in equal amounts.Therefore,the major product is a racemic mixture.

$CH_3-CH_2-CH_2-CH_3 \xrightarrow{Br_2/hv}$
Major product in the above reaction is

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$CH_3-CH_2-CH_2-CH_3 \xrightarrow{Br_2/hv}$ Major product in the above reaction is