What is the IUPAC name of the compound with the formula C4H6?

What is the IUPAC name of the compound with the formula C4H6?

Correct Answer: 2-butyne

Step 1: Identify the number of carbon atoms in the compound. C4H6 has 4 carbon atoms.
Step 2: Determine the type of compound. Since C4H6 has a triple bond (due to the number of hydrogens being less than twice the number of carbons plus two), it is an alkyne.
Step 3: Count the total number of hydrogen atoms. For 4 carbon atoms in an alkyne, the formula is CnH2n-2, which gives us C4H6.
Step 4: Name the longest carbon chain. The longest chain with 4 carbons is called butyne.
Step 5: Identify the position of the triple bond. The triple bond starts at the second carbon in the chain, so we name it 2-butyne.
Step 6: Combine the information to get the final IUPAC name: 2-butyne.

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