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MCAT O Chem
Ch. 6 Aromatic compounds
Question | Answer |
---|---|
any compound that is not aromatic | aliphatic, or "fatty" |
Huckel's rule | 4n+2pi electrons is an aromatic compound |
compound that fits characteristics of aromatic except Huckel's rule | antiaromatic |
aromatic compounds referred to as | aryl and arenes |
ortho or 0 | 1,2 disubstituted |
meta or m | 1,3 disubstituted |
para or p | 1,4 disubstituted |
benzene characteristics | all 6 C atoms are sp2 hybridized, each of the six orbitals overlaps equally with its two neighbors. as a result delocalized e- form 2 pi e- clouds, one above plane, one below |
aromatic rings react with bromine or chlorine in the presence of what | a Lewis acid such as FeCl3, FeBr3, AlBr3, AlCl3 |
types of substitution reactions benzene can undergo | halogenation, sulfonation, nitration, alkylation, and acylation |
what is the least reactive substituted aromatic compound | Nitro compound. |
activators | substituent groups that donate electron density |
deactivators | substituent groups that withdraw electron density |