Chapter 7 Notes - Chapter 7 Notes Aromaticity Reactions of...

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Chapter 7 Notes – Aromaticity Reactions of Benzene and Substituted Benzenes 7.1 – Criteria for Aromaticity - An arom atic is a cyclic and planar compound with an uninterrupted ring of p orbital-bearing atoms containing an odd number of pairs of π electrons - Every ato m in the ring m ust have a p orbital 7.2 – Aromatic Hydrocarbons - Aromaticity of hydrocarbons follows the rules above - The hydrocarbon m ust h ave an uninterrupted ring of p orbital-bearing atoms and have an odd number of pairs of delocalized π electrons 7.3 – Aromatic Heterocyclic Compounds - A het erocyclic co mpound is a cyclic co mpound in which one or m ore of the rin ato ms is an ato m other than a carbon - The het eroato m can h ave a lone pair of electrons in a p orbital or an sp 2 orbital depending on the hybridization of the atom - Drawing resonance structures can help confirm whether the electrons are π electrons or not 7 . 4 – No m e n clatur e of Mono s ub s titut e d B enz e n e s - When a benzen e ring is a substituent, it is called a ph enyl group - A benzene ring with a m ethylene group is called a benzyl group - An aryl group (Ar) is the g en eral term for either a ph enyl group or a substitute ph enyl group 7 . 5 – Ho w B enz e n e React s - Electrophilic arom atic substitution reactions – an electrophilic substituent for o
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This note was uploaded on 09/12/2011 for the course CHEM 1315 taught by Professor Unknown during the Spring '07 term at Georgia Institute of Technology.

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Chapter 7 Notes - Chapter 7 Notes Aromaticity Reactions of...

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