Abstract A new series of mono azo dyes (D1-D4) was synthesized by coupling 8-anilino naphthalene-1-sulphonic acid (1) with different aromatic amines (2a-d) and applied on wool fabric. The color fastness properties of the dyed material were also studied. Spectroscopic techniques including 1H NMR, MALDI, FT-IR and UV–Visible were employed for structural characterization. The thermal gravimeteric analysis
Verfahren zur Herstellung von Phenyldiazosulfonaten
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0068338A1
公开(公告)日:1983-01-05
Die Erfindung betrifft ein Verfahren zur Herstellung von Aryldiazosulfonaten, durch Umsetzung wäßriger Lösungen von Aryldiazoniumsalzen mit Lösungen oder Suspensionen von Sulfiten, und zwar derart, daß man einen Überschuß eines der beiden Reaktionspartner während der Reaktion weitgehend ausschließt. Das erfindungsgemäße Verfahren ermöglicht eine erhebliche Steigerung der Ausbeuten an Aryldiazosulfonaten.
1-(p-Carbamoylphenyl)-3,3-dimethyltriazene, an Antitumour Agent
作者:W. L. Bullerwell、L. R. MacGillivray、M. J. Zaworotko、K. Vaughan、D. E. V. Wilman
DOI:10.1107/s0108270195008419
日期:1995.12.15
In the crystal structure of the title compound, 4-(3,3-dimethyl-1-triazeno)benzamide, C9H12N4O, (2), the N=N double bond [1.282(8) Angstrom] is 0.030 Angstrom shorter than the N-N single bond [1.312(8) Angstrom], but both bonds are Shorter than an isolated N-N single bend suggesting that there is double-bond character in each N-N bond, although it is unequally distributed. The molecule adopts a trans geometry around the N=N bond, but there is a significant deviation from planarity between the benzene ring and the plane of the triazene moiety. Compound (2) forms chains in the solid state in which the molecules are linked by C=O ... H-N hydrogen bonds between carbamoyl groups. These chains are cross-linked into sheets by hydrogen bonding between the second N-H moiety and triazene units in adjacent chains.