title: Synthesis and conformational properties of 2,6-bis-anilino-3-nitropyridines.
abstract: The synthesis of 2,6-bis-anilino-3-nitropyridines that are alkylated or acylated at the anilino nitrogen atoms is described. These derivatives show characteristic differences in the 1H-NMR spectra compared with the unsubstituted parent compound. These differences are used to determine structure-conformation relationships of this type of compounds. The conclusions drawn from the 1H-NMR spectra in this respect are supported by X-ray crystallographic data and by 1H-NMR data of conformationally restricted analogues. Preliminary investigations indicate that these relationships can in principle be extended to other diarylamines.
authors.affiliation: Universität Ulm, Abteilung Organische Chemie II, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
authors.forename: Sylvia
authors.initials: S
authors.lastname: Schmid
authors.forename: Martin
authors.initials: M
authors.lastname: Röttgen
authors.forename: Ulf
authors.initials: U
authors.lastname: Thewalt
authors.forename: Volkhard
authors.initials: V
authors.lastname: Austel