CHEM 213 Lecture Notes - Lecture 9: Benzene, Phenyl Group, Aliphatic Compound
20 Feb 2017
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Document Summary
Discovery of benzene: in the 19th century, organic compound were classi ed as either aliphatic or aromatic. Aliphatic: meaning fat-like , a long chain of c h, saturated, does not dissolve in water. C6h6 = benzene ring. low ratio: fragrant . Nomenclature of benzene and benzene derivatives: naming monosubstituted benzene. In many simple compounds, benzene is the parent name and the substituent is simply indicated by a pre x. For other simple and common compounds, the substituent and the benzene ring taken together may form a commonly accepted parent name: ex. tolene, phenol, acetophenenol, when naming disubstituted benzene. Ortho-/o : 1,2: ex. o-nitrobenzoic acid. Phenyl = benzene"s name as a substituent. Benzyl = an alternative name for the phenyl methyl group, sometimes abbreviated as. To take away double bonds on benzene: h2/ni or h2/pd in high pressure. Benzene undergoes only substitution, no addition: double bonds can undergo addition, but benzene rings can not.
