38 research outputs found
Synthesis, XRD and spectroscopic characterization of pharmacologically active Cu(II) and Zn(II) complexes
No full textRetraction. One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP)
No full textCatalytic Hydroxylation of Phenols using Schiff base complex of Copper metal complexes derived from L-histidine
No full textA new Schiff base metal complex of quinoxiline 2-carboxyaldehyde and L-histidine was prepared. The resulting complex was analyzed through different physiochemical techniques like elemental analysis, molar conductivity measurement ,Thermo gravimetry and differential gravimetry technique, FT-IR, EPR spectrum etc. The catalytic application of the complex was checked in liquid phase hydroxylation of phenols. The effect of different physical and chemical parameters like effect of catalyst amount and oxidant ,effect temperature were also recorded. It was found the catalyst is suitable for caring out the liquid phase oxidation of phenols. The catalyst gives more than 40% oxidation product conversion
Preparation Characterisation and Catalytic Oxidation of Alcohols using Polymer Supported Cu (II) Metal Complex
No full textAbstract A new polymeric ligand (L) was synthesized by the Michael addition of ethylenediamine to methyl methacrylate. The prepared ligand was complexed with Cu (II) ions, The ligand and its complex were characterized by elemental analysis and spectroscopic studies (FT-IR, UV-Vis, 1H NMR and ESI-MS). Square pyramidal geometry was proposed for copper complexes, on the basis of UV-Vis spectroscopic data and molar conductance measurements. The catalytic application of ligand metal complex was recorded for the oxidation of cyclohexanol, benzyl alcohol, 1-phenyethanol, propanol, respectively andeco-friendly, nontoxic hydrogen peroxide
One-pot synthesis of new Pyrido [2,3-d] Pyrimidine derivatives under ultrasonic irradiation using organo catalyst 4-Dimethylaminopyridine (DMAP)
No full textAbstractThe one-pot synthesis of pyrido[2,3-d] pyrimidine derivatives has been reported via Knoevenagel-Michal addition pathways using substituted aromatic aldehydes, Cyanoacetamide and 6-aminouracil in N,N-dimethylformamide (DMF) solvent, with 4-dimethylaminopyridine (DMAP) as new organo catalyst catalyst under ultrasonic irradiation. The results showed that a series of aromatic aldehydes were effectively used to prepare the targeted pyrido [2, 3-d] pyrimidine derivatives with good to excellent yields (81-93 %) with no major effect on the yield of product by electron donating/withdrawing substituents. Short reaction time, environment friendly procedure, excellent yields, inexpensive and readily available catalyst are the advantages of this procedure. All synthesized compounds were characterized by IR, 1HNMR, 13CNMR and mass spectral data.</jats:p
Synthesis of Ni(II), Cu(II) and Co(II) complexes with new macrocyclic Schiff-base ligand containing dihydrazide moiety: Spectroscopic, structural, antimicrobial and antioxidant properties
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