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Question

In the naming of the given compound, the terminal carbon to the right will be the 1st carbon in the main chain. What is the IUPAC name of the given compound?

A
Heptanone
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B
Hex-2-enone
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C
Hex-4-en-2-one
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D
Hexanoic acid
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Solution

The correct option is C Hex-4-en-2-one

The above compound has a double bond and a ketone as the functional group. The primary suffix while naming the molecule is “-ene”. The secondary suffix is “one”. It is given that the rightmost carbon is the first carbon in the main chain. It is because the functional group ketone has priority over alkene. Let's assign numbers to the carbons in the compound.

Now while writing the chemical name, we have to mention the position of the double bond and ketone in the name. The name of the compound is “Hex-4-en 2-one.”

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