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Addition of HBr in the presence of peroxide (anti-Markovnikov, free radical)

This type of question, asked 3 times: 28 Jul 2022, 27 Jan 2024, 28 Jan 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    28 Jul 2022

    43
    Choose the correct option for the following reactions.

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  2. Question 2

    27 Jan 2024

    55
    3-Methylhex-2-ene on reaction with HBrHBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for ' AA ' is _____ .

  3. Question 3

    28 Jan 2026 S1

    40
    Ph−CH=CH2Ph - CH =CH_{2} →(PhCOO)2HBr Product\underset{HBr\ }{\overset{(PhCOO)_{2}}{\rightarrow}}Product Consider the above reaction (A) The reaction proceeds through a more stable radical intermediate. (B) The role of peroxide is to generate H˙\dot{H} (Hydrogen radical). (C) During this reaction, benzene is formed as a by-product. (D) 1-Bromo-2-phenylethane is formed as the minor product. (E) The same reaction in absence of peroxide proceeds via carbocation intermediate. Identify the correct statements. Choose the correct answer from the options given below:

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