Results 41 to 50 of about 70,902 (254)

Synthesis of Heterocyclic Schiff Bases and Evaluation of Their Antibacterial Activities and Physicochemical Properties [PDF]

open access: yesJournal of Advanced Biomedical Sciences, 2020
Background & Objectives: Over the past few decades different Schiff bases have been studied which show that these compounds are prepared by condensation reaction of aldehydes and ketones with different amines.
Khadijeh Rabiei
doaj  

Stereoselective cycloaddition of 1-glucosyl-1,3-butadienes with tert-butyl 2H-azirine-3-carboxylate, glyoxylates and imines [PDF]

open access: yes, 2003
Glucosyl dienes 1 have been reacted with the achiral 2H-azirine 4 and with glyoxylates, forming fused structures of type 5 and disaccharide-like compounds 7 with good to excellent selectivity.
Almeida, I. G.   +3 more
core   +1 more source

Synthesis, spectroscopic studies and electrochemical properties of Schiff bases derived from 2-hydroxyaldehydes and phenazopyridine hydrochloride [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
Novel Schiff bases (1-4) were synthesized by the reaction of 2-hydroxybenzaldehyde, 2-hydroxy-5-methoxybenzaldehyde, 2-hydroxy-5-nitrobenzaldehyde, 2-hydroxy-1-naptaldehyde with phenazopypridine hydrochloride (PAP) and their structures were elucidated
Yagmur Sultan   +5 more
doaj   +1 more source

Comparative Study of Microwave-assisted and Conventional Synthesis of 3-[1-(s-phenylimino) Ethyl]-2H-chromen-2-ones and Selected Hydrazone Derivatives [PDF]

open access: yes, 2016
In this study, 3-acetylcoumarin 1, used as the essential precursor was synthesized by the reaction of salicyaldehyde with ethyl acetoacetate in the presence of a catalytic amount of piperidine in solvent-free medium.
Adekoya, J. A.   +5 more
core  

Synthesis, Characterisation and Biological Activity Screening Of Schiff Base Ligands Containing Isatin and Their Metal Complexes [PDF]

open access: yes, 2008
Six new Schiff bases formed from the condensation reaction of S-benzyldithiocarbazate (SBDTC) and S-methyldithiocarbazate (SMDTC) with selected diketones containing isatin derivatives namely isatin, 5-fluroisatin, 5-chloroisatin, 5-bromoisatin and ...
Abdul Manan, Mohd Abdul Fatah
core  

Synthesis, Spectral, Anticancer Studies on Cu (II) Complex of 2,4,5-Triphenyl-1H-Imidazole [PDF]

open access: yes, 2016
Schiff bases of 2,4,5-triphenyl-1H­-imidazole ligand and Cu(II) complex has been synthesized and characterized by 1H and 13C NMR, elemental analyses, molar conductance, thermal analysis (TGA), magnetic moment measurement, IR and UV-Vis.
Candrawati, I. (Iin)   +2 more
core   +2 more sources

METHODS FOR USING GOLD (III) COMPLEXES AS ANTI-TUMOR AND ANTI-HIV AGENTS [PDF]

open access: yes, 2004
Disclosed is the use of gold (III) complexes of porphyrins, Schiff-bases, bis(pyridyl)carboxamides and bis(pyridyl)sulfonamides as anti-tumor and anti-HIV agents ...

core  

Synthesis and characterization of novel porphyrin Schiff bases [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
Novel porphyrin Schiff bases were synthesized by a simple Schiff base condensation in refluxing toluene between 5-(4-aminophenyl)-10,15,20-triphenylporphyrin (ATTP) 3 and styryl aldehydes 4–6 or p-halobenzaldehydes 7–9.
LEI WANG   +3 more
doaj   +3 more sources

Synthesis, Characterisation and Biological Activities of Nitrogen-Sulphur Ligands and Their Transition Metal Complexes [PDF]

open access: yes, 2008
Synthetic compounds, especially those containing heterocyclic ring systems composed of nitrogen and sulphur have been of great interest due to their versatility as medicinal drugs.
Begum, Thahira
core  

Synthesis and characterization of Cu(II), Ni(II) and Zn(II) metal complexes of bidentate NS isomeric Schiff bases derived from S-methyldithiocarbazate (SMDTC): Bioactivity of the bidentate NS isomeric Schiff bases, some of their Cu(II), Ni(II) and Zn(II) complexes and the X-ray structure of the bis[S-methyl-β-N-(2-furyl-methyl)methylenedithiocarbazato]zinc(II) complex. [PDF]

open access: yes, 2002
Two new isomeric Schiff bases, S-methyl-β-N-(2-furylmethyl)methylenedithiocarbazate (NS′) and S-methyl-β-N-(5-methyl-2-furyl)methylenedithiocarbazate (NS″) have been prepared. Bis-chelated complexes of these two bidentate ligands, [M(NS)2], [M=Cu(II), Ni(
Ali, A.M.   +5 more
core   +1 more source

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