IUPAC Name of C₄H₆ | but-1-yne
What is the IUPAC name of C₄H₆?
The IUPAC name of C₄H₆ is but-1-yne. It is a alkyne with a 4-carbon parent chain (but-1-yne).
| Formula | C₄H₆ |
| IUPAC Name | but-1-yne |
| Compound Class | Alkyne |
| Parent Chain | but-1-yne (4 carbons) |
| Substituents | None |
| Difficulty | Intermediate |
Step 1: Identify the Parent Chain
The longest continuous carbon chain in C₄H₆ contains 4 carbon atoms, giving the parent name but-1-yne. The parent chain must include the carbon-carbon triple bond.
Step 2: Number and Name Substituents
but-1-yne has no substituents. The molecule consists solely of the 4-carbon parent chain with hydrogen atoms filling all remaining bonding positions.
Step 3: Assemble the IUPAC Name
With no substituents to add, the IUPAC name is simply the parent chain name: but-1-yne.
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