Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
Practice Questions
1 question
Q1
Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
2-Methylpropan-1-ol
3-Methylbutan-1-ol
2-Methylbutan-1-ol
3-Methylpropan-1-ol
The longest chain has four carbons, and the hydroxyl group is on the first carbon, with a methyl group on the second carbon, making it 2-Methylbutan-1-ol.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
Solution: The longest chain has four carbons, and the hydroxyl group is on the first carbon, with a methyl group on the second carbon, making it 2-Methylbutan-1-ol.
Steps: 7
Step 1: Identify the longest carbon chain in the molecule. Count the number of carbon atoms in the chain.
Step 2: In the given structure CH3-CH2-CH(CH3)-OH, the longest chain has 4 carbon atoms.
Step 3: Number the carbon atoms in the longest chain starting from the end closest to the hydroxyl (OH) group.
Step 4: The hydroxyl group (OH) is on the first carbon, so we label it as carbon 1.
Step 5: Identify any substituents (additional groups) on the main chain. Here, there is a methyl group (CH3) on the second carbon.
Step 6: Combine the information: The longest chain is a butane (4 carbons), and there is a methyl group on the second carbon.
Step 7: Write the IUPAC name by stating the position of the substituent and the main chain: 2-Methylbutan-1-ol.
