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MHT CET202520 Apr 2025Evening ShiftChemistryHydrocarbonsActual

Propene on hydroboration followed by oxidation with alkaline peroxide forms.

Options

  1. ATri-n-propylborane
  2. BTri iso propylborane
  3. CPropan-1-ol
  4. DPropan-2-ol

Correct answer

C. Propan-1-ol

Step-by-step solution

Hydroboration-oxidation of propene proceeds through anti-Markovnikov addition of water across the double bond. The reaction begins with hydroboration, where the boron atom adds to the less substituted carbon while hydrogen adds to the more substituted carbon. Propene reacts with borane to form tri- n -propylborane: 3 CH ₃ CH = CH ₂ + BH ₃ ( CH ₃ CH ₂ CH ₂)₃ B . Oxidation with alkaline hydrogen peroxide cleaves the boron-carbon bonds, replacing boron with hydroxyl groups: ( CH ₃ CH ₂ CH ₂)₃ B + 3 H ₂ O ₂ + NaOH 3 CH

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