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Azimine. VII . Herstellung durch Oxydation von Triazanen
Author(s) -
Egger Notker,
Hoesch Lienhard,
Dreiding André S.
Publication year - 1983
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19830660529
Subject(s) - chemistry , aryl , medicinal chemistry , polymer chemistry , organic chemistry , alkyl
Azimines. VII Teil VI, s. [1]. . Preparation by Oxidation of Triazanes A novel method for the preparation of certain azimines 4 by oxidation of 1,2,3‐trisubstituted triazanes 3 is described. Treatment of 3‐aryl‐triazane‐1,2‐diesters 3a‐3c with lead tetraacetate afforded the 3‐aryl‐azimine‐1,2‐diesters 4a‐4c . The precursor triazanes 3a‐3c were prepared by addition of p ‐substituted anilines to diisopropyl diazene‐1,2‐dicarboxylate 1b . A comparison of the spectral properties of the azimines 4 with those of the correspondingly substituted triazanes 3 reveals the unsaturated and dipolar nature of the azimines 4 .