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MHT CET202526 Apr 2025Morning ShiftChemistryHydrocarbonsActual

Identify the product 'A' formed in the following reaction.

Options

  1. A2,3-Dibromopentane
  2. B2-Bromo-3-methylbutane
  3. C3-Bromo-2-methylbutane
  4. D2,3-dibromo-2-methylbutane

Correct answer

D. 2,3-dibromo-2-methylbutane

Step-by-step solution

Electrophilic addition of bromine to 2-methylbut-2-ene yields 2,3-dibromo-2-methylbutane. Bromine adds across the double bond to both carbons, forming the dibromide CH₃C(CH₃)(Br)CH(Br)CH₃ . The longest carbon chain is butane, with a methyl group and bromine at C2 and bromine at C3. The systematic name is 2,3-dibromo-2-methylbutane, corresponding to option D.

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