Aromatic Chemistry (OCR A-Level Chemistry A): Flashcards
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Disubstitution
Disubstitution
Benzene ring with two substituent groups
Activating group effect on benzene
Activating group effect on benzene
Increases reactivity toward electrophiles
Deactivating group effect on benzene
Deactivating group effect on benzene
Decreases reactivity toward electrophiles
Ortho position on benzene
Ortho position on benzene
Positions 2 & 6, adjacent to first substituent
Meta position on benzene
Meta position on benzene
Positions 3 & 5, one carbon from first substituent
Para position on benzene
Para position on benzene
Position 4, opposite first substituent
2- and 4-directing groups direct to
2- and 4-directing groups direct to
Ortho (2,6) and para (4) positions
3-directing groups direct to
3-directing groups direct to
Meta (3,5) positions
Halogens: activating or deactivating?
Halogens: activating or deactivating?
Deactivating but still ortho-para directing
Why order matters in multi-step synthesis
Why order matters in multi-step synthesis
First substituent directs where second one goes