Lewis-base Solvent Free Complex Synthesis
Lewis Acid Catalyzed Synthesis of Quinophthalone Pigments Under Solvent-Free Conditions
... ecient synthesis of quinophthalones has been achieved with the use of phthalic anhydride and 2-methylquinoline derivatives as starting materials and BF 3 /Et 2 O as a catalyst under solvent-free and ...
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Solvent Free Green Protocol for the Synthesis of Anti-Bacterial Schiff Base Dimers
... Schiff base dimers have been designed and synthesized from phthalaldehydes and various amines including aliphatic, aromatic and heterocycles by grinding at room ...This solvent free green protocol ...
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A COMPARITIVE VIEW OVER THE SYNTHESIS OF SCHIFF BASE LIGANDS AND METAL COMPLEXES BY CONVENTIONAL AND SOLVENT FREE ROUTES
... paper, synthesis of Schiff base ligands and the metal complexes are studied and compared by conventional and solvent free ...The synthesis of Schiff base ligands of amino acids ...
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The Synthesis of Solvent Free TiO2 Nanofluids through Surface Modification
... A method for solving this problem is to disperse nanoparticles in a base fluid, known as nanofluids, is studied for many years. The nanofluids is composed of two parts, including solvents and nanoparticles. The ...
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Synthesis of new phenanthro imidazole derivatives in solvent free condition
... In the last decade, 2,4,5-trisubstituted imidazoles are synthesized by one-pot three-component compression of an aldehyde and ammonium acetate with an α-hydroxy ketone, or an α-keto- oxime, or a 1,2-dicarbonyl compound ...
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COMPARATIVE STUDY OF SYNTHESIS OF 2, 4, 5 TRIARYL SUBSTITUTED IMIDAZOLES UNDER SOLVENT FREE CONDITIONS USING DIFFERENT LEWIS ACIDS AS CATALYSTS
... under solvent-free conditions by grinding 1, 2- diketone, aromatic aldehydes and ammonium acetate in the presence of I 2 , NaH 2 PO 4 and SnCl 2 ...of synthesis of imidazoles and yield of the ...
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An efficient solvent-free synthesis of meso- substituted dipyrromethanes using SnCl
... Thus, from all above data, we confirmed that reaction gives excellent yield at 0.2 mmol of SnCl 2 ·2H 2 O. This study also confirmed that the SnCl 2 ·2H 2 O played a great role as a Lewis-acid catalyst because its ...
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Solvent free mechano chemical synthesis and characterisation of nanocrystalline transition metal hippurates
... hipurate complex states that the hydrogen ions in the hippuric acid molecules are substituted by the metal ion and the hippurate is the coordination ligand (Brzyska and Hakim, 1992; Kumar and Srivastava, 1979 and ...
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Solvent Free Synthesis and Antimicrobial Potential of Some (2E) 4 methoxyphenyl Chalcones
... for synthesis of α, β-unsaturated carbonyl compounds, the best route is the Crossed-Aldol condensation of equimolar quantities carbonyl substrates with substituted benzaldehydes in base catalysts ...
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Synthesis, Characterization and Antimicrobial Screening of Fe (III) Schiff Base Complex
... Characterization of ligand IR spectra were recorded in KBr medium on a Perkin-Elmer 783 spectrophotometer. UV-Visible spectrum of complex was recorded in DMSO on a shimadzu UV-1601 spectrophotometer. The ligand is ...
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Synthesis and Characterization of Co (III) Complex of the New Chiral Schiff Base
... site of hydrolytic enzymes, where it is ligated by hard donors (N or O). It has long been recognized as an important co-factor in biological molecules, either as a structural template in protein folding or as a ...
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Chemoselective Synthesis of 1,1-diacetate Using Ni2+@ Hydroxyapatite-core@shell γ-Fe2O3 Nanoparticles as an Efficient and Reusable Lewis Acid Catalyst under Solvent Free Conditions
... Abstract A simple and efficient method for the chemoselective 1,1-diacetate protection of aromatic aldehydes with acetic anhydride by using Ni 2+ supported on hydroxyapatite- core-shell magnetic γ-Fe 2 O 3 nanoparticles ...
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Lewis base catalyzed enantioselective oxysulfenylation of alkenes
... The order in acid is curved. Curvature in kinetic plots usually results from a change in mechanism. At low concentration, the order in acid appears to be close to 1. At these concentrations, there is likely insufficient ...
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Mild and Solvent-free Synthesis and Antibacterial Evaluation of Novel Sulfonamides Containing Hydroxyl Groups
... free conditions. Anhydrous NaHCO 3 was used as an inorganic green solid base. Using K 2 CO 3 as the base gives rise to di-sulfonylated byproducts in most cases. Sulfonations of aliphatic amino ...
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Solvent-Free Microwave Synthesis of Trialkylphosphates
... Key words: Trialkylphosphates, Alkylphosphoric acids, Microwave-irradiation, solvent free. These reactions are schematized according to the Scheme 1 and Scheme 2. The hydrochloric acid formed by this ...
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1 Solvent Free Synthesis and Safener Activity of
... Abstract : A series of novel sulfonylurea benzothiazoline were designed by splicing active groups 10.. and bioisosterism.[r] ...
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Microwave assisted solvent free synthesis of 1,3-diphenylpropenones
... Results: Differently substituted chalcones were synthesized using iodine impregnated neutral alumina as catalyst in 79-95% yield in less than 2 minutes time under microwave activation without using any solvent. ...
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Catalyst and solvent-free synthesis of β-enaminone derivatives
... for synthesis of the β-enaminones is ...under solvent and catalyst-free conditions at 120 °C affords the β-enaminone and β-enamino esters in high-to-excellent yields, in short reaction time, easy ...
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‘Frustrated’ Lewis pairs: From Lewis acid -base adducts to the reversible, metal-free activation of hydrogen
... ‘Frustrated’ Lewis pairs: From Lewis acid -base adducts to the ‘Frustrated’ Lewis pairs: From Lewis acid -base adducts to the reversible, metal-free activation of hydrogen.. reversible[r] ...
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Synthesis of Schiff’s Base Derivatives Using Water as Solvent (A Green Methodology)
... Abstract: The synthetic work has been done by using the various substituted aromatic aldehydes and ethylene diamine under mild conditions using water as green solvent. On completion of reaction the product was ...
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