Question

The IUPAC name of the compound \( \text{CH}_3\text{CH}= \text{CHC}\text{H}_2\) is

• A. pent-4-yn-2-ene
• B. pent-3-en-1-yne
• C. pent-2-en-4-yne
• D. pent-1-yn-3-ene

Hint:

The position of the functional groups (double and triple bonds) is key to determining the IUPAC name.

Answer 1

The Correct Option is B

The compound is a conjugated system with both a double bond and a triple bond. Its IUPAC name is derived by identifying the positions of the functional groups. The correct name is pent-3-en-1-yne.

Step 2: Conclusion.
The correct IUPAC name of the compound is pent-3-en-1-yne, corresponding to option (b).