38501-99-4

Upstream product

• 90-02-8 salicylaldehyde 
• 95-53-4 o-toluidine 
• 67-66-3 chloroform 
• 6676-95-5 4-[(2-methylphenyl)azo]-phenol 

Downstream Products

• 1612160-55-0 4-o-tolylazo-2-{[3-(2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3]undec-1-yl)propylimino]methyl}phenol 
• 158791-46-9 (C₆H₅)3Sn(OCHC₆H₃(O)NNC₆H₄CH₃) 
• 158791-43-6 (C₆H₅)3SnCl(OCHC₆H₃(OH)NNC₆H₄CH₃) 

Relevant academic research and scientific papers

Some polyhydroxy azo-azomethine derivatives of salicylaldehyde: Synthesis, characterization, spectroscopic, molecular structure and antimicrobial activity studies

Some new substituted polyhydroxy azo-azomethine compounds were prepared by reaction of tris(hydroxymethyl)aminomethane with (E)-2-hydroxy-5-(phenyldiazenyl) benzaldehyde and its substituted derivatives. The structures of azo and azo-azomethine compounds were determined by IR, UV-vis, 1H NMR and 13C NMR spectroscopic techniques, and/or X-ray diffraction studies. According to IR spectra, all azo-azomethine compounds adopt keto form in solid state. UV-vis analysis has shown the presence of keto-enol tautomerism in solution for all azo-azomethine compounds, except that for nitro substituted derivative, enol form is dominantly favored in solution. At the same time, above mentioned derivative compounds were studied in vitro for their antimicrobial properties. Among the phenylazosalicylaldehyde series compound tested, 4-phenylazosalicylaldehyde, 4-(3-chlorophenylazo)salicylaldehyde, 4-(2-chlorophenylazo)salicylaldehyde, 4-(4-fluorophenylazo)salicylaldehyde, 4-(3-chlorophenylazo)salicylaldehyde and 4-(4-ethylphenylazo)salicylaldehyde showed a weak antimicrobial activity only against gram positive bacteria. On the contrary, phenylazosalicylaldehyde series compounds were reacted tris(hydroxmethyl)aminomethane, that exhibited a strong antimicrobial activity against gram positive bacteria, yeast and mould. Moreover, while the 2-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-ylimino]methyl}phenol did not show an inhibition on tested microorganism, the addition of phenyldiazine groups to 2-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-ylimino]methyl}phenol resulted in a strong increases in antimicrobial activity.

Metal complexes of bis-hydrazones

Bis-hydrazone metal complexes of the formula STR1 wherein A denotes an isocyclic or heterocyclic radical, R denotes a H atom, an alkyl group or an aryl radical, M denotes a divalent transition metal and zinc or cadmium, X1 and X2 independently of one another represent alkyl, cycloalkyl, aralkyl or aryl radicals, or conjointly form a fused carbocyclic or heterocyclic aromatic ring, L denotes a ligand having one or more coordinating N or S atoms, and n denotes the number 1 - 5, are useful for coloring plastic and lacquers in fast yellow to red shades.

Azomethine pigments

Azomethine pigments of the formula SPC1 And metal complexes thereof, wherein A denotes an isocyclic or heterocyclic aromatic radical, R denotes a H atom, an alkyl group containing 1-6 C atoms, or an aryl radical, X2 and X4 denote H atoms or halogen atoms, X1 and X3 denote H atoms or halogen atoms, alkoxy or alkylmercapto groups containing 1-6 C atoms, cycloalkoxy groups containing 5-6 C atoms, or aralkoxy, aryloxy or arylmercapto groups, it being possible for one of the substituents X1 -X4 also to be a nitro group which are useful for pigmenting of high molecular material.