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JEE Main levelSingle correct optionDifficulty 2 of 3o2082

Pent-1-ene is treated with HBr in the presence of $(C X_{6} H X_{5} COO) X_{2}$ . The major product is

A3-bromopentane
B2-bromopentane
C1-bromopentane
D1,2-dibromopentane

Answer: C

Benzoyl peroxide initiates the radical chain.

Br \cdot

adds to the terminal carbon, giving a secondary radical at C-2, and H abstraction from HBr yields

CH X_{3} CH X_{2} CH X_{2} CH X_{2} CH X_{2} Br

, 1-bromopentane.

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