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Showing 1 to 16 of 16 for “"Schiff bases."”.
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Chemical, Biological, and Preliminary In Vitro Studies of Novel Vanadium(IV) Complexes with Schiff Bases and Thiosemicarbazone Ligands
… acid (the reduced Schiff base) were prepared using known synthetic procedures. Two novel thiosemicarbazone ligands, <em>(E</em>)-<em>N</em>-ethyl-2-(4-hydroxy-3-methoxybenzylidene)hydrazinecarbothioamide (<em>N</em>-Ethhymethohcarbthio) and …
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Metal(ii) schiff base complexes and the insulin-mimetic Studies on the oxovanadium(iv) complexes
… symmetrical and four unsymmetrical tetradentate Schiff bases with the N2O2 chromophore were isolated in pure form and fully characterized by elemental analyses, melting point, IR and 1H NMR. The appearance of two different peaks for each of the azomethine protons and phenolic protons confirm the …
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Development of O,N-bidentate ruthenium catalysts for isomerization and kinetic studies of ruthenium carbenes for C=C coupling reactions
… key in optimizing the efficiency of catalysts. Schiff bases are known to strongly enhance the thermal and moisture stability of the corresponding complexes and isomerization is important in many chemical processes. The above reasons promote the first part of the work to concentrate on the …
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Use of Oximes and Schiff-bases as Bridging/Chelating Ligands with Select 3d and 3d/4f Ions in Cluster Chemistry and a Mechanistic Insight into the Roles of Transition Metal Ions in the Formation of Tetrazoles
The employment of acenaphthenequinone dioxime (acndH2), 9,10-phenanthrenedione-9-oxime (phenoxH), 9,10-phenanthrenedione-9,10-dioxime (phendoxH2), and N-naphthalidine-2-amino-naphthol (nanpH2) in homometallic 3d- and heterometallic 3d/4f-metal cluster chemistry has afforded a Mn cluster and novel …
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Formation of Maillard Reaction Products and Chlorogenic Acid-Quinone Induced Green Pigments in Gluten-Free Pretzels Made Using Sunflower Flour
… centrifuged flour mixtures were used to quantify Schiff bases, CGA, melanoidins, and trihydroxybenzacridine (TBA) derivatives. The precipitates were dehydrated in a vacuum oven and FTIR analysis was used to identify changes that occurred in the secondary structures of proteins. Pretzels prepared …
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P-dimetilanilinazometinfenollerin oksidatif kondenzasyon polimerizasyonu
… (GPC) yöntemi ile belirlendi. Sentezlenen Schiff bazı ve polimerinin yapısı UV-Vis, FTIR, 1H-NMR spektrumları ile karaterize edildi. Monomer ve polimerinin termal davranışı ise TG/DTG-DTA teknikleri ile aydınlatıldı. Termal analiz ölçümlerine ek olarak polimerin termal bozunması, 25-800 oC …
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Desymmetrilizing Organic Molecules via Structural Functionalization
… of meso-glutaric anhydrides catalyzed by Ni2-Schiff bases, asymmetric amination of selected prochiral ketones, selective diester hydrolysis, selective oxidation of diols and triol, etc. This master thesis will be mainly focused mono hydrolysis of diesters and mono oxidation of dialdehydes as …
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Modular synthesis for cooperative small molecule ligands and chemical education
… pyridine rings are to be exchanged with metal-schiff bases complexes that are capable of reversibly forming µ-oxo bridges with molecular oxygen. As a framework for chemical education, modular synthesis serves the role of reducing the barrier to entry in organic chemistry and enabling students …
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Design and Synthesis of Complex and Fluorescent Labeled Cellulose-Based Derivatives for Orally Administered Drug Delivery Systems
… and hydroxypropyl beta cyclodextrin). Schiff-base chemistry was then explored to append a commercially available fluorescent label, Nile Blue. Due to the dynamic nature and hydrolytic lability of Schiff-bases, I applied reductive-amination chemistry with either one pot, or two-step …
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Selected topics in fast atom bombardment (FAB) mass spectrometry a)specially designed probe tips and ion generation, b)structures of vitamin B6 schiff base complexes
… section involves the study of several Vitamin B6 Schiff Base complexes using both positive and negative ion FAB MS. This section is an exploration of the usefulness of FAB MS as a structure probe for the metalcoordination complexes of Vitamin B6.
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Zeolite encapsulated metal complexes as heterogeneous catalysts for oxidation reactions
… zeolite, confirming successful immobilization of Schiff-bases through the voids of zeolite Y.These encapsulated complexes were screened as heterogeneous catalysts for various oxidation reactions such as such as phenol, benzene, styrene and cyclohexene using a green oxidant (H2O2).For comparison, …
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X-ray crystallographic studies on the self-condensation products of o-aminobenzaldehyde and anthranilic acid and of the metal complexes of some related tetra-azamacrocycles.
… based on Cull and Felll of two dibrominated Schiff bases were investigated. The dibrominated copper salen derivative is monomeric, in contrast to the unbrominated compound, which is dimeric. The Felll derivative, like the earlier-mentioned oxidised tetra-azamacrocyclic iron derivative, has a …
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Growth and chemical functionalization of SiC nanowires for biomedical applications in cardiology and oncology
… the cancer cells. Thiosemicarbazones (TSCs) are Schiff bases which in recent years have attracted considerable attention thanks to their promising anticancer properties. These compounds are very active also in the fight against malaria, moreover they are used as antifungal and antibacterial …
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ΜΕΛΕΤΗ ΟΞΕΙΔΩΣΗΣ ΟΞΙΜΙΝΙΚΩΝ ΚΑΙ ΙΜΙΝΙΚΩΝ ΠΑΡΑΓΩΓΩΝ ΚΑΡΒΟΝΥΛΙΚΩΝ ΕΝΩΣΕΩΝ
… FURTHERMORE, REACTION OF LTA WITH BIS-SCHIFT BASES, DERIVED FROM THE CONDESATIONOF ETHYLENEDIAMINE WITH AROMATIC CARBONYLS, GAVE HYDROLYSIS INSTEAD OF CYCLISATION PRODUCTS. FINALLY, REACTION OF LTA WITH BIS-SCHIFT BASES OF DIACETYL ANDBENZIL YIELDED SUBSTITUTED ACETANILIDE AND AZOBENZENE. …