Results 201 to 210 of about 70,902 (254)
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Polymeric Schiff Bases. III. Some Prototype Exchange Reactions of Schiff Bases
Journal of Macromolecular Science: Part A - Chemistry, 1967Abstract The amine moiety in Schiff bases can be exchanged quantitatively by another amine to yield new Schiff bases if the volatility of the replacing amine is lower than the derived amine, thereby allowing the latter to distilled from the reaction mass. This amine exchange was shown to be quantitative also for diamines and di-Schiff bases. Similarly,
G. F. D'alelio +3 more
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Pyridoxal-derived Schiff’s bases
Russian Journal of General Chemistry, 2015Over the past few decades synthesis of functionalized derivatives of pyridoxal (vitamin B6) and study of their biological activity have received a great deal of interest [1–3]. Among these compounds, monoand bis-azomethines of pyridoxal occupy an important place [4–6].
L. K. Kibardina +4 more
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Polymeric Schiff Bases. VI. The Direct Syntheses of Poly-Schiff Bases
Journal of Macromolecular Science: Part A - Chemistry, 1967Abstract The synthesis of black, high molecular weight polymeric Schiff bases directly from aryldiamines and aryldialdehydes by two methods is described. The first method utilizes benzylideneaniline as the reaction medium. The second method is a direct one-step synthesis involving the reaction of the aryldiamine, aryldialdehyde, aniline, and ...
G. F. D'alelio +3 more
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Schiff's bases of polyallylamine
Polymer Bulletin, 1987Schiffs bases of polyallylamine were synthesized by the reaction with four aldehydes. Salicylaldehyde (S)- and 2-pyridinecarboxaldehyde (P)-Schiff's base could be used as reverse osmosis membranes when crosslinked with divinyl sulfone, diacetyl or ethylene glycol diglycidyl ether.
Eizo Oikawa, Ken Yahata
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Experientia, 1964
Vond-Cycloserin ist die erste Schiffsche Base isoliert und charakterisiert worden. Bei Erhitzen in Athylalkohol unterbleibt die Umlagerung in einen Cycloserindimerenabkommling und ergibt Racemisierung. Es wird gefolgert, dass Aldehyde nicht auf das Stickstoffatom des Isoxazolidons reagieren und dass Dimerisation von Cycloserinnicht fur die Reaktion mit
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Vond-Cycloserin ist die erste Schiffsche Base isoliert und charakterisiert worden. Bei Erhitzen in Athylalkohol unterbleibt die Umlagerung in einen Cycloserindimerenabkommling und ergibt Racemisierung. Es wird gefolgert, dass Aldehyde nicht auf das Stickstoffatom des Isoxazolidons reagieren und dass Dimerisation von Cycloserinnicht fur die Reaktion mit
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Binuclear schiff base complexes
Inorganica Chimica Acta, 1989Abstract Two new binucleating ligands, pentyl-bis(3-(bae)) and octyl-bis(3-(bae)) and their copper(II) and nickel(II) complexes have been prepared and characterized. The binuclear Cu(II) and Ni(II) complexes display magnetic and spectroscopic behavior characteristic of square-planar monomeric compounds.
Mark S. Mashuta +2 more
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Novel mesomorphic Schiff bases
Chemistry of Heterocyclic Compounds, 19972-(4-Alkoxybenzylideneamino)-4-[(4-nitrophenyl)amino]thiazoles have been synthesized. They show nematic type enantiotropic mesomorphism in the range 41–184°C.
A. S. Golovanov +2 more
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Schiff base compounds as artificial metalloenzymes
Colloids and Surfaces B: Biointerfaces, 2022Much research has been done on traditional homogeneous metal catalysts and enzymatic catalysts, but recently a new class of hybrid catalysts called synthetic (artificial) metalloenzymes has been considered by researchers. Metalloenzymes as hybrid catalysts (host-guest systems) have been shown that combine the properties of a homogeneous and also ...
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1988
The Schiff base complexes described in this chapter are derived from ligands obtained by the reaction of aldehydes or ketones with amines. Ligation to manganese occurs through the nitrogen atom of the azomethine group (>C=N−), as well as through other functional groups present in the ligand, such as hydroxy and carboxy groups or other groups containing
L. J. Boucher +5 more
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The Schiff base complexes described in this chapter are derived from ligands obtained by the reaction of aldehydes or ketones with amines. Ligation to manganese occurs through the nitrogen atom of the azomethine group (>C=N−), as well as through other functional groups present in the ligand, such as hydroxy and carboxy groups or other groups containing
L. J. Boucher +5 more
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Oxazolidines versus schiff bases
Journal of Heterocyclic Chemistry, 1967AbstractThe formation of oxazolidines from propionaldehyde and aliphatic β‐aminoalcohols is complicated by the appearance of appreciable amounts of unsaturated Schiff bases. The simple Schiff base, often the dominant species when aromatic aldehydes react with amines, could not be detected in the present aliphatic systems.
R. M. Srivastava +2 more
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