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

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

Options:

Correct Answer: 1-Butene

Solution:

The compound has a double bond between the first and second carbons, making it 1-Butene.

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

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

Step 1: Identify the longest carbon chain in the compound. The structure CH3-CH2-CH=CH2 has four carbon atoms in a row.
Step 2: Count the number of carbon atoms in the longest chain. There are 4 carbon atoms, which means the base name is 'butane'.
Step 3: Look for any double bonds in the structure. There is a double bond between the first and second carbon atoms.
Step 4: Since there is a double bond, change 'butane' to 'butene'.
Step 5: Number the carbon chain starting from the end closest to the double bond. The double bond is between carbon 1 and carbon 2.
Step 6: Since the double bond starts at carbon 1, the IUPAC name is '1-Butene'.

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