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Organic Chapter Chemistry
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Naming Substituted Aromatic
Rings Benzenoid Compounds
Traditional naming system relied on ortho (o-),
meta (m-), and para (p-) convention relative to the
highest priority carbon on the ring
Ortho position corresponded to the group joined to
carbon 2 on the ring
Meta position corresponded to the group joined to
carbon 3 on the position ring
Para corresponded to the group joined to
carbon 4 on the ring
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Naming Substituted Aromatic
Rings Benzenoid Compounds
IUPAC nomenclature relies on naming the
substituents in a manner similar to the rules
we learned for chains
The number on the C containing the
substituent is indicated, followed by the
substituent prefix and ring name.
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