IUPAC and NomenclaturehardMCQ SINGLE

When a chain-terminating carbon-containing functional group is directly attached to an alicyclic rinIUPAC and Nomenclature Chemistry Question

Question

When a chain-terminating carbon-containing functional group is directly attached to an alicyclic ring, a special suffix must be used. The IUPAC name of a cyclohexane ring directly attached to a $-CN$ group is:

Answer: A

💡 Solution & Explanation

Because the carbon atom of the $-CN$ group cannot be included in the ring's carbon counting, it must be designated by the special suffix "carbonitrile". The ring is named as an intact alkane, giving Cyclohexanecarbonitrile.

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