Ipso, meso, and peri Substitution
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ipso- substitution.
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meso- substitution.
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peri- substitution.
- Ipso-substitution describes two substituents sharing the same ring position in an intermediate compound in an electrophilic aromatic substitution.
- Meso-substitution refers to the substituents occupying a benzylic position. It is observed in compounds such as calixarenes and acridines.
- Peri-substitution occurs in naphthalenes for substituents at the 1 and 8 positions.
Read more about this topic: Arene Substitution Patterns
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