Solvent-free condition
‘Claycop’ catalyzed highly efficient and chemoselective aza Michael addition under solvent free condition
... environmental friendly reaction during past decades. Clay supported catalysts provide easy separation of the products from the reaction without tedious experimental workup and enable the efficient recovery of the ...
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Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition
... a free flowing powder that can be stored at room temperature for several months without losing its catalytic potentiality and it may be considered asa very cheap source of solid supported acidic catalyst compared ...
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An efficient One pot Synthesis of 1, 4 Dihydropyridine Derivatives under Solvent free Condition
... Synthesis of 1, 4 – Dihydropyridines were accomplished by the condensation of Acetoacetnilide, Aromatic aldehydes and Ammonium acetate in the presence of Bismuth trichloride as catalyst under solvent free ...
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L tyrosine catalyzed Knoevenagel condensation: Facile synthesis of cyanoacrylonitriles cyanoacrylates and cyanoacrylamides in solvent free condition under grindstone method
... and Cl at para position with Active methylene compounds 2(a-c) i.e. malononitriles, ethyl cyanoacetate and ethyl cyanoacetamide can be carried out in relatively shorter time and higher yield than with electron donating ...
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Synthesis of β-enaminones Catalyzed by In/AlMCM-41 Under Microwave Irradiation and Solvent-free Condition
... and solvent-free ...time, solvent-free condition, simple work-up procedure, environmentally benign methodology, recoverable and reusability of ...
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An ultrasonic assisted multicomponent reaction for the synthesis of 3, 4 dihydropyrimidin 2(1H) ones under solvent free condition
... An efficient sonochemistry methodology is described for the synthesis of 3, 4-dihydropyrimidin- 2(1H)-ones (Biginelli reaction) by condensation of various substituted benzaldehydes, Diketone/ β-ketoester and urea/ ...
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Synthesis of 2, 4, 6-Triaryl Pyridines under Solvent Free Condition
... Synthesis of 2, 4, 6 triaryl pyridine under solvent free condition is described. Ammonium carbonate effectively catalyzed the reaction in good to excellent yields. Using this catalyst, the reactions ...
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SYNTHESIS OF 1,8-DIOXO-OCTAHYDROXANTHENES WITH THIAMINE CHLORIDE IN ECO-FRINDLY AND SOLVENT FREE CONDITION
... a solvent-free ...a solvent-free condition gave 85% yield of product (Table 2), while decreasing the temperature to 60 °C leads to the product in 35% ...optimized condition is 20 ...
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Synthesis of 2-Amino-4H-chromene Derivatives under Solvent-Free Condition Using MOF-5
... In the 50 mL flask mixture of malononitrile (1.0 mmol), aldehyde (1 mmol), and 2-naphthol (1.0 mmol) in the presence of a catalytic added and the mixture was stirred at 80 °C. After completion of the reaction as ...
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Synthesis of new phenanthro imidazole derivatives in solvent free condition
... General mechanism for the synthesis of phenanthro imidazoles Examination of the effects of temperature, power, time on the synthesis of the three - substituted phenanthro derivatives o[r] ...
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A convenient one-pot synthesis of Series of 1, 5-Benzodiazepine Derivatives under Solvent free Condition
... Barium chromate(catalytic amount) were ground well using mortar and pestle, the reaction mixture was then diluted with ethyl acetate and stir for 30min, after completion of the reaction {monitored on TLC, eluent: ethyl ...
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A Rapid and Efficient Microwave Assisted Synthesis of 2 Arylbenzoxazoles by Using 1,3 Dibromo 5,5 Dimethylhydantoin (DBH) Under Solvent Free Condition
... In ongoing research on 1, 3-dibromobromo-5, 5-dimethylhydantoin (DBH) is an inexpensive, commercially available and versatile convenient reagent used in various transformations [29-33] and also in order to avoid the ...
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Nano-SbCl5/SiO2 as an Efficient Catalyst for One-Pot Synthesis of 2, 4, 5-Trisubstituted Imidazoles Under Solvent- Free Condition
... Herein we wish to report a simple and convenient method for the synthesis of 2, 4, 5-tri substituted imidazoles by condensation of aldehydes with benzil and ammonium acetate under solvent-free conditions in ...
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SYNTHETIC APPROACHES FOR BIS (INDOLYL) METHANES
... 30. Chandama DR, Deshmukha MB, Mulika AG, Patilb PP, Patila DR, Jagdalea SD, Anbhulea PV, Sankpala SA: An efficient synthesis of bis(indolyl) methanes under solvent free condition using Silica ...
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SOLID SUPPORTED MICROWAVE ASSISTED RAPID SYNTHESIS OF 1, 3, 4 OXADIAZOLES
... ,solvent free condition, microwave assisted rapid synthesis of 1- (2,5- substituted diphenyl)-1, 3, 4- oxadiazol -3(2H) - yl) ethanone (3a-3k) by cyclization of N'- (substituted phenyl methylidene) ...
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Knoevenagel condensation at room temperature using SeO2/ZrO2 catalyst in water medium and solvent free conditions
... From the environmental and economic perspective present work is focused on development of new zirconia based heterogeneous catalyst and using aqueous media or solvent free condition to perform ...
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Transition metals as efficient catalysts for transesterification of Beta keto Esters under Solvent-free conditions
... under solvent-free microwave ...but, solvent-free condition microwave irradiation technique was found to be more efficient for transesterification with reduced reaction times and ...
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“Montmorillonite K-10 Supported Solvent-Free Synthesis of Novel 2-thioxoimidazole-4-one N-nucleosides” by Shalini Jaiswal, I. R. Siddiqui, India.
... under solvent-free condition provides environmentally benign protocol with additional advantages such as enhanced reaction rate, higher yields of pure product, easier workup, better selectivity, ...
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Lewis Acidic Ionic Liquids As New Addition Catalyst For Oleic Acid To Monoestolide Synthesis
... and solvent free condition for 10 hours at 85 °C in the presence of solid zinc chloride anhydrous (ZnCl 2 ), choline chloride (ChCl) and ionic liquids (IL) ChCl-ZnCl 2 , ChCl-FeCl 3 , ChCl-SnCl 2 , ...
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Vol 8, No 11 (2019)
... A mixture of p-toluenesulfonyl hydrazide (5 mmol) and aldehyde (5 mmol) was stirred with Eaton's reagent (5 mol %) at room temperature under the solvent-free condition for 2 h. Progress of the ...
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