MCQ
The $\text{IUPAC}$ name for the compound is:
- A$2-$acetyl prop$-1-$ene
- Bpent$-1-$en$-4-$one
- ✓Pent$-4-$en$-2-$one
- Dformyl propene
✓
Answer
Correct option: C.
Pent$-4-$en$-2-$one
The $\text{IUPAC}$ name for the given compound is Pent$-4-$en$-2-$one.
The parent hydrocarbon contains $5^\circ C$ atoms. Hence, the compound is a derivative of pentane$. A C=O$ group is present at second $C$ atom.
Hence the last alphabate $'e\ '$ of pentane is replaced with $2-$one to obtain pentan$-2-$one.
There is one $C=C$ double bond between fourth and fifth carbon atom. Hence $-$an$-$ in pentan$-2-$ one is replaced with $4-$en.
Hence, the correct $\text{IUPAC}$ name is Pent$-4-$en$-2-$one.
The parent hydrocarbon contains $5^\circ C$ atoms. Hence, the compound is a derivative of pentane$. A C=O$ group is present at second $C$ atom.
Hence the last alphabate $'e\ '$ of pentane is replaced with $2-$one to obtain pentan$-2-$one.
There is one $C=C$ double bond between fourth and fifth carbon atom. Hence $-$an$-$ in pentan$-2-$ one is replaced with $4-$en.
Hence, the correct $\text{IUPAC}$ name is Pent$-4-$en$-2-$one.
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