CHE 101 Chapter Notes - Chapter 17: Ammonium Hydroxide, Red, Aniline
Document Summary
Basic strength: nh 3 < rnh 2 < r 2 nh < r 3 n: aromatic amine : Basic strength: nh 3 > ar- nh 2 > ar 2 - nh 2. Benzene ring decreases the electron density over n atom due to resonance effect. Rnh 2 + r"cocl r"co nhr an n-substituted amide. R 2 nh + r"cocl r"co. nr 2 an n,n disubstituted amide: benzoylation (schotten baumann reaction) Primary amine reacts with benzoyl chloride to give the acylated product: carbylamine reaction (given only by primary amines): C 2 h 5 nh 2 + chcl 3 + 3koh c 2 h 5 nc + 3kcl + 3h 2 o. N-nitrosoammonium compound: coupling reactions of arene diazonium salts, ring substitution in aromatic amines, aniline -x rearrangement: Such compounds are not much stable so the group x migrates mainly at p-position: fisher-hepp rearrangement, phenylhydroxylamine - p-aminophenol rearrangement. Separation of a mixture of amines: hinsberg"s method.
