Determine the structure of the following alkene: 3-isopropylcyclohexene.

• A.
• B.
• C.
• D.

Answer: (D)

Verified step by step guidance

1. Identify the main structure: The name '3-isopropylcyclohexene' indicates that the main structure is a cyclohexene ring, which is a six-membered carbon ring with one double bond.
2. Locate the double bond: In cyclohexene, the double bond is typically between two adjacent carbon atoms in the ring. This is important for determining the position of substituents.
3. Determine the position of the substituent: The '3-isopropyl' part of the name indicates that an isopropyl group is attached to the third carbon of the cyclohexene ring. Count the carbons starting from the double bond to locate the third carbon.
4. Draw the isopropyl group: An isopropyl group consists of a central carbon atom bonded to two methyl groups (CH₃). Attach this group to the third carbon of the cyclohexene ring.
5. Verify the structure: Ensure that the cyclohexene ring has one double bond and the isopropyl group is correctly attached to the third carbon. The structure should match the name '3-isopropylcyclohexene'.