Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?

Practice Questions

Q1
Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
  1. 2-Methylpropan-1-ol
  2. 3-Methylbutan-1-ol
  3. 2-Methylbutan-1-ol
  4. 3-Methylpropan-1-ol

Questions & Step-by-Step Solutions

Which of the following is the correct IUPAC name for CH3-CH2-CH(CH3)-OH?
  • 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.
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