potassium carbonate
Synthesis and biological activities of novel heterocyclic chalcone derivatives by two different methods using anhydrous potassium carbonate as an efficient catalyst
... A series of twenty heterocyclic chalcones 3(a-t) were synthesized by using conventional and microwave irradiation methods in the presence of anhydrous potassium carbonate as an safe, inexpensive and ...
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The system potassium carbonate-magnesium carbonate as an analogue to mantle carbonate melts: Experimental determination of phase relations and selected physical properties at high pressure
... pure potassium carbonate and the measured calcium-potassium carbonate intermediate agrees well with W olffs (1995) predictions, giving a theoretical atmospheric pressure density for pure ...
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SYNTHESIS AND BIOLOGICAL EVALUATION OF SOME NEW CHALCONES USING ANHYDROUS POTASSIUM CARBONATE AS AN EFFICIENT BASIC CATALYST BY CONVENTIONAL AND MICROWAVE ASSISTED TECHNIQUES
... anhydrous potassium carbonate in ethanol solution and by microwave irradiation method with good yield compared to conventional ...Anhydrous potassium carbonate has been utilized as safe, ...
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Potassium Carbonate as a Salt for Deep Eutectic Solvents - Volume 4 Number 3 (Jun. 2013) - IJCEA
... Abstract—Deep Eutectic Solvents (DES) are emerging as new class of green solvents with the favorable properties of low cost, minimum volatility, biodegradability and suitability for many industrial applications. In an ...
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Effect of Potassium Carbonate (K2CO3) on the Viscosity and Related Physico – Chemical Properties of Genger (Bombax costatum) Powder during Storage
... in potassium carbonate (K 2 CO 3 ) concentration, the viscosity, crude fat, water absorption capacity and gel strength all increased significantly (p < ...with potassium carbonate can be ...
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Dehydration of Alcohol by Potassium Carbonate
... 1925.. There has been considerable investieation into the feasi- b ility of concentrating alcohol in fairly dilute solutions up to 95% alcohol, the product ordinaril[r] ...
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Densities and Refractive Indices of Potassium Carbonate -Based
... refractive index of DESs, TDESs and their HBDs were measured as a function of temperature and. 222[r] ...
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Synthesis, characterization and antimicrobial evaluation of some new N (2,4 dichlorobenzyl) indolylchalcones
... Series of new 1-{N-(2,4-dichlorobenzyl)indolyl)}-1-phenylpropanones were synthesized. The intermediate 1H- indolyl-1-phenylpropenones were synthesized by the reaction of 3-acetyl indole with appropriate benzaldehyde in ...
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Large Scale Process to Prepare Highly Pure Bosentan Monohydrate
... 3, potassium carbonate and ethylene glycol in 1: ...completion potassium carbonate fusion is necessary which is not viable on commercial ...Without potassium carbonate fusion ...
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*Srikanth Gurrala, J. Venkateshwar Rao, T. Manish Kumar, D. KumaraSwamy
... 12.4gm of S-(5-difloromethoxy1H-benzimidazol-2-yl) ethanethioate (III) is obtained from the 13gm (0.06mole) of 5-difloro-methoxy 2-mercapto benzimidazole (I), 8.2gm (0.06mole) of potassium carbonate and 4.7 ...
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Effect of Antifreeze Admixtures on Cold Weather Concrete
... Kashmir is located in a region where winter temperatures are very low. During the winter months, the temperature in Kashmir is often below 0⁰ C. Generally concrete placed in colder regions with the help of insulated ...
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Synthesis of Nicotine Derivatives from Natural Nicotine, Total Synthesis of (S)-Brevicolline, and Advances towards the Synthesis of Dihydrolycolucine.
... Freshly distilled isopropanol (1.2 mL, 15.623 mmol, 1.2 equiv) was added to a solution of KOt-Bu (1.75 g, 15.623 mmol, 1.2 equiv) in THF (15 mL) at room temperature. After 5 min, 2-chloro-6-(methoxymethoxy)-pyridine ...
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A FACIAL SYNTHESIS OF SUBSTITUTED PHENYL SULFONAMIDE DERIVATIVESMahesh Walle*DOWNLOAD/VIEW
... To a stirred solution of 5-bromofuran-2-sulfonyl amide (1.0 mmol) in acetone (25 ml) and potassium carbonate (2 eq). Added Substituted phenacyl bromide (1 eq). Stirred reaction mass at room temperature for ...
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Investigations to Improve Biodiesel Yield from High Free Fatty Acid Feedstock
... of potassium hydroxide and potassium carbonate is investigatedwith the objective to maintain good catalyst activity while avoiding detrimental effects of residual water in the reaction ...
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The bisspiroketal moiety of epi 17 Deoxy (0 8) salinomycin : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University
... The acetylene 231 (7 1 mg, 0.15 mmol) was dissolved in dry tetrahydrofuran (4 ml) and cooled to -75°C under nitrogen. n-Butyllithium (0.094 ml of a 1.6 M solution in hexane, 0. 15 mmol) was added and the reaction stirred ...
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melatonin microwave pdf
... of potassium carbonate and phase-transfer catalysts under the condition of microwave irradiation for just only 6 min, then C-alkylation of ethyl acetacetate with the resulting bromide at another 6 min gave ...
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Effect of pretreatments and curing methods on the flavor profile of essential oil of processed small cardamom (Elettaria cardamomum (L.) Maton)
... The α-terpinyl acetate and 1, 8-cineole content in essential oil showed significant difference among pre treatments and curing methods. The higher content of α- terpinyl acetate were reported from capsules treated with ...
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Synthesis of 1-azabenzo[a]phenoxazin-5-one and 11-amino-1,8,10-triazabenzo[a]phenoxazin-5-one and their functionalized aryl derivatives via Mizoroki-Heck arylation methodology
... Into a two necked round bottom flask equipped with magnetic stirring bar, the mixture of 1 , 4 - b i s ( 2 - h y d r o x y - 3 , 5 - d i -t e r t- b u t y l b e n z y l ) piperazine ligand (0.5 g), 1,4-bis ...
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Crystal structure, Hirshfeld surface analysis and DFT study of (2Z) 2 (4 fluorobenzylidene) 4 (prop 2 yn 1 yl) 3,4 dihydro 2H 1,4 benzothiazin 3 one
... and potassium carbonate as base, leading to the title compound namely (2Z)-2-(4-fluorobenzylidene)-4- (prop-2-yn-1-yl)-3,4-dihydro-2H-1,4-benzothiazin-3-one in good yield (Sebbar et ...
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Design, synthesis and biological evaluation of the novel isoindolinone derivatives
... To a solution of compound 9 (0.11 g, 0.36 mmol) in dry N, N-dimethylformamide (2 mL) was added potassium carbonate (0.15 g, 1.09 mmol), stirred for 10 min, then morpholine (0.5 g, 0.55 mmol) was added, ...
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