Draw structures corresponding to the following IUPAC names: A. 1-tert-Butyl-2-methylcyclopentane B. 1-Ethyl-4-isopropylhexane C. 1,1-dichloropropane D. 4-Ethyl-3,4-dimethyloctane E. 1-sec-butyl-3-isopropylcyclopentane

Draw structures corresponding to the following IUPAC names: A. 1-tert-Butyl-2-methylcyclopentane B. 1-Ethyl-4-isopropylhexane C. 1,1-dichloropropane D. 4-Ethyl-3,4-dimethyloctane E. 1-sec-butyl-3-isopropylcyclopentane

The correct Answer and Explanation is:

Here’s how you can interpret each:

1. 1-tert-Butyl-2-methylcyclopentane – This is a cyclopentane ring with a tert-butyl group at position 1 and a methyl group at position 2.
2. 1-Ethyl-4-isopropylhexane – The longest chain has six carbon atoms (hexane). At position 1, there’s an ethyl (-CH₂CH₃) group, and at position 4, an isopropyl (-CH(CH₃)₂) group.
3. 1,1-dichloropropane – A three-carbon chain (propane) where two chlorine atoms are attached to the first carbon.
4. 4-Ethyl-3,4-dimethyloctane – An octane backbone with ethyl (-CH₂CH₃) at carbon 4 and two methyl (-CH₃) groups at carbons 3 and 4.
5. 1-sec-butyl-3-isopropylcyclopentane – A cyclopentane ring with a sec-butyl (-CH(CH₃)CH₂CH₃) group at position 1 and an isopropyl (-CH(CH₃)₂) group at position 3.

Each name follows IUPAC conventions for systematic naming, ensuring correct placement of substituents on the longest chain or cyclic structure.

For drawing, I’d recommend exploring molecular visualization tools, which allow for interactive representations.