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MHT CET202620 April 2026Morning ShiftChemistryGeneral Organic ChemistryActual

What is IUPAC name of the following compound ?

Options

  1. APent-2-en-4-amine
  2. BPent-3-en-2-amine
  3. C1-Methylbut-2-en-1-amine
  4. D4-Methylbut-2-en-4-amine

Correct answer

B. Pent-3-en-2-amine

Step-by-step solution

The principal functional group in the given compound is the amine ( -NH₂ ) group. The longest continuous carbon chain containing the carbon attached to the amine group and the double bond has 5 carbon atoms, making the parent chain a pentene. According to IUPAC rules, the chain is numbered to give the principal functional group the lowest possible locant, as the amine group has higher priority than the alkene double bond. Numbering from right to left places the amine group at position 2 and the double bond at posit

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