Aromatic Hydrocarbons. (Chapter 32). CH 3. Napthalene. Benzene. Methylbenzene. Aromatic Hydrocarbons. Aroma Ring of sp 2 carbon atoms (4n+2) delocalized bonding electrons. Discovery of the structure of benzene. Molecular Formula: C 6 H 6 Structural Formula: ?.
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Molecular Formula: C6H6
Structural Formula: ?
A is ruled out because only ONE
Evidence: There are THREE disubstituted
isomers of C6H4Cl2.
B (CH3-CC-CC-CH3 )is ruled out too!
ArH + SO3 Ar+ ArSO3- + H+ k-1 k2
KMnO4/OH- is better than KMnO4/H+
As C6H5COO- acts as a solvent that mix
C6H5CH3 and MnO4-
Oxidation takes place at first by the abstraction
of a phenylmethyl hydrogen by the O.A., once
take place, oxidation continues until a
carboxyl group is left.
No reaction (no H on C)