Chemistry A-Level
Directing effects of OH, NH₂ and NO₂
What Directing effects of OH, NH₂ and NO₂ means in Chemistry A-Level, as defined for OCR.
Definition of Directing effects of OH, NH₂ and NO₂
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Reference: OCR
OH and NH₂ push electron density into the ring so the next electrophile arrives mainly at the 2- and 4-positions, while NO₂ pulls electron density out so substitution occurs mainly at the 3-position.
Topics that use Directing effects of OH, NH₂ and NO₂
- Aromatic compounds (OCR A-Level)
Related terms
- Activating and 2,4-directing effect of the –OH group
- Bond lengths in benzene
- Carbon–carbon bond formation in synthesis
- Comparison with carboxylic acids and the carbonate test
- Delocalised π system and electron density
- Delocalised π system in benzene
- Directing effects
- Directing effects of the –OH group
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