Which of the following is the correct IUPAC name for CH3-CH2-C≡C-CH3?
Practice Questions
1 question
Q1
Which of the following is the correct IUPAC name for CH3-CH2-C≡C-CH3?
1-pentyne
2-pentyne
3-pentyne
butyne
The longest carbon chain has 5 carbons with a triple bond starting at the second carbon, hence the name 2-pentyne.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following is the correct IUPAC name for CH3-CH2-C≡C-CH3?
Solution: The longest carbon chain has 5 carbons with a triple bond starting at the second carbon, hence the name 2-pentyne.
Steps: 6
Step 1: Identify the structure of the compound CH3-CH2-C≡C-CH3. This shows a chain of carbon atoms with a triple bond.
Step 2: Count the number of carbon atoms in the longest chain. There are 5 carbon atoms.
Step 3: Determine the type of bond present. The 'C≡C' indicates a triple bond.
Step 4: Identify the position of the triple bond. The triple bond starts at the second carbon in the chain.
Step 5: Use the IUPAC naming rules. Since there are 5 carbons in the chain, it is called 'pentyne'.
Step 6: Combine the position of the triple bond with the name of the chain. Since the triple bond starts at the second carbon, the name is '2-pentyne'.
