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(A) The reaction of but$-1-$ene with $HBr$ in the presence of peroxide follows the anti-Markovnikov addition mechanism (Kharasch effect or peroxide ef

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$1-$bromobutane (major) and $2-$bromobutane (minor)

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(A) The reaction of but$-1-$ene with $HBr$ in the presence of peroxide follows the anti-Markovnikov addition mechanism (Kharasch effect or peroxide effect). In this mechanism,the bromine atom attaches to the carbon atom with more hydrogen atoms (the terminal carbon). Thus,$1-$bromobutane $(CH_3CH_2CH_2CH_2Br)$ is formed as the major product,and $2-$bromobutane $(CH_3CH_2CH(Br)CH_3)$ is formed as the minor product.

Which products are obtained on reaction of but$-1-$ene with $HBr$ in the presence of peroxide?

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