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NEET2004ChemistryHydrocarbonsActual

Reaction of HBr with propene in the presence of peroxide gives:

Options

  1. Aisopropyl bromide
  2. B3-bromo propane
  3. CAllyl bromide
  4. Dn -propyl bromide

Correct answer

D. n -propyl bromide

Step-by-step solution

Reaction of HBr with propene in the presence of peroxide gives n -propyl bromide. This addition reaction is an example of anti-Markownikoffs addition reaction. Related Theory Peroxide undergoes fission to give free radicals. R - O - O - R 2 R - O HBr combines with free radical to form bromine free radical. R- O + HBr R - OH + B B attacks the double bond of the alkene to form a more stable free radical. More stable free radical attacks the HBr . aligned CH ₃ C CHH ₂ Br + HBr & CH ₃ CH ₂ CH ₂ Br + B & n-propylbromide

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