Question

What is the correct IUPAC name of the given compound?

• A. 4-Aminopentanenitile
• B. 2-Aminopentanenitile
• C. 3-Aminobutanenitile
• D. 2-Aminobutanenitrile

Answer 1

The Correct Option is A

To determine the correct IUPAC name for the given compound, we need to follow the IUPAC naming conventions for organic compounds.

1. Identify the longest carbon chain containing the nitrile group (\text{CN}). In the structure, the longest chain containing the nitrile group has five carbon atoms.
2. Number the carbon chain starting from the nitrile group to give the substituents the lowest possible numbers.
3. Identify and name the substituents. In this compound, there is an amino group (\text{NH}_2) attached to the fourth carbon atom of the chain.
4. Write the IUPAC name by combining the substituents, the chain length (pentane), and the functional group (-nitrile):
   • The longest chain is a 5-carbon alkane: pentane.
   • The nitrile group is attached to the first carbon: pentanenitrile.
   • An amino group is attached to the fourth carbon: 4-amino.
5. Combine these components to obtain the full IUPAC name: 4-Aminopentanenitrile.

Therefore, the correct IUPAC name of the given compound is 4-Aminopentanenitrile.