chapter12 - CHP 12 Problems 12.1-24, 26 12.1 Aromatic...

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CHP 12 Problems 12.1-24, 26 12.1 Aromatic Hydrocarbons Aromatic hydrocarbons refer to compounds which contain especially stable cyclic conjugated p orbitals. These compounds have many common names. Examples When benzene rings contain more than two substituents a special nomenclature is used. When the two substituents are at position 1 and 2 it is termed ortho or o- , when two substituents are at positions 1 and 3 it is termed meta or m- , and when two substituents are at positions 1 and 4 it is termed para or p- . Examples One can also name benzene rings as substituents. When the substituent is –C 6 H 5 is is termed a phenyl substituent and when the substituent is –CH 2 C 6 H 5 it is termed a benzyl substituent. 12.2 Phenols Phenols are compounds with a hydroxyl group attached to an aromatic ring. The delocalization of the electrons on oxygen into the aromatic ring gives these compounds different acidity and reactivity than other alcohols. Phenolate ions are good nucleophiles. 12.3
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This note was uploaded on 04/17/2009 for the course CHM 227 taught by Professor Rosen during the Fall '08 term at Rhode Island.

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chapter12 - CHP 12 Problems 12.1-24, 26 12.1 Aromatic...

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