AMINES_A - E.V. Blackburn, 2008 Amines - classification RNH...

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Unformatted text preview: E.V. Blackburn, 2008 Amines - classification RNH 2 R 2 NH R 3 N R 4 N + X- 1 o 2 o 3 o quaternary ammonium salts E.V. Blackburn, 2008 Nomenclature To name aliphatic amines, name the alkyl groups bonded to the amine nitrogen and then add the suffix amine : (CH 3 ) 3 CNH 2 t-butylamine Systematic nomenclature adds the suffix to the name of the hydrocarbon: C 2 H 5 NHCH 3 ethylmethylamine CH 3 CH 2 NH 2 ethanamine C 2 H 5 NHCH 3 N-methylethanamine E.V. Blackburn, 2008 Nomenclature In the IUPAC system, the -NH 2 group is called the amino group. The prefix amino (or methylamino , diethylamino etc.) is therefore used in naming complex molecules. H 2 NCH 2 CH 2 CH 2 CO 2 H 4-aminobutanoic acid -aminobutyric acid H 2 NCH 2 CH 2 OH 2-aminoethanol ethanolamine H 3 C N H C CH 3 H (CH 2 ) 4 CH 3 2-methylaminoheptane E.V. Blackburn, 2008 m-nitroaniline 3-nitrobenzenamine N-ethyl- N-methylaniline N-ethyl- N-methylbenzenamine Nomenclature NO 2 NH 2 N H 3 C C 2 H 5 E.V. Blackburn, 2008 Salts of amines are named by replacing the suffix amine by ammonium :- ethylammonium sulfate trimethylammonium nitrate anilinium chloride Nomenclature (C 2 H 5 NH 3 ) 2 SO 4 2- + (CH 3 ) 3 NH NO 3- + C 6 H 5 NH 3 Cl- + E.V. Blackburn, 2008 Physical Properties 1 o and 2 o amines can! Their intermolecular association by hydrogen bonding reduces their volatility relative to hydrocarbons of similar molecular weight....
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AMINES_A - E.V. Blackburn, 2008 Amines - classification RNH...

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