What is the IUPAC name of following compound?

• A

  1-Methylbut-2-en-1-amine
• Correct answer
  B

  Pent-3-en-2-amine
• C

  Pent-2-en-4-amine
• D

  4-Methylbut-2-en-4-amine

Solution

In IUPAC nomenclature of organic compounds, - $\mathrm{NH}_2$ group has a higher priority than a carboncarbon double bond.

Hence, the correct answer is option: 'B'.