What is the IUPAC name for the compound with the structure CH3-CH=CH-CH2-CH3?

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Question: What is the IUPAC name for the compound with the structure CH3-CH=CH-CH2-CH3?

Options:

Correct Answer: 2-pentene

Solution:

The longest carbon chain containing the double bond has 5 carbons, and the double bond starts at the second carbon, making it 2-pentene.

What is the IUPAC name for the compound with the structure CH3-CH=CH-CH2-CH3?

What is the IUPAC name for the compound with the structure CH3-CH=CH-CH2-CH3?

Step 1: Identify the structure of the compound. The structure is CH3-CH=CH-CH2-CH3.
Step 2: Count the number of carbon atoms in the longest chain. There are 5 carbon atoms.
Step 3: Determine where the double bond is located. The double bond is between the second and third carbon atoms.
Step 4: Name the longest carbon chain. Since there are 5 carbon atoms, the base name is 'pentene'.
Step 5: Indicate the position of the double bond. The double bond starts at the second carbon, so we add '2-' to the name.
Step 6: Combine the information to get the IUPAC name. The final name is '2-pentene'.

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