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Sodium Bromide Catalyzed One-Pot Synthesis of Tetrahydrobenzo[b]pyrans via a Three-Component Cyclocondensation under Microwave Irradiation and Solvent-Free Conditions.
A Novel Three-Component One-Pot Synthesis of Pyrano[2,3-d]pyrimidines and Pyrido[2,3-d]pyrimidines Using Microwave Heating in the Solid State.
Sodium bromide catalysed one-pot synthesis of tetrahydrobenzo[b]pyrans via a three-component cyclocondensation under microwave irradiation and solvent free conditions
Abstract Sodium bromide catalysed three-component cyclocondensation of aryl aldehydes, alkyl nitriles and dimedone proceeds under microwave irradiation in solvent free conditions to give highly… Expand
A novel three-component one-pot synthesis of pyrano[2,3-d]pyrimidines and pyrido[2,3-d]pyrimidines using microwave heating in the solid state
Abstract Microwave-assisted three-component cyclocondensation of barbituric acids 1 , benzaldehyde 2 and alkyl nitriles 3 proceeds in the absence or presence of triethylamine to afford… Expand
Studies on uracils: a facile one-pot synthesis of oxazino[4,5-d]-, pyrano[2,3-d]-, pyrido[2,3-d]- and pyrimido[4,5-d]pyrimidines using microwave irradiation in the solid state
Abstract N , N -Dimethyl-5-formylbarbituric acid 1 reacts with maleimide 2 and phenyl isocyanate/phenyl isothiocyanate 4 under microwave-assisted conditions in the solid phase to afford pyrano[2,3- d… Expand
An expedient method for the synthesis of 6-substituted uracils under microwave irradiation in a solvent-free medium
Condensation of malonic acid 1 and ureas 2a–f proceeds smoothly in the presence of acetic anhydride 3 under microwave irradiation in solvent-free conditions to give 6-hydroxy-uracils 4 in excellent… Expand
Stereoselective intramolecular hetero Diels–Alder reactions of 1-oxa-1,3-butadienes: a novel approach for the synthesis of complex annulated uracils
Abstract The intramolecular hetero Diels–Alder reactions of 1-oxa-1,3-butadienes 4 , obtained from salicylaldehyde 1 via O -allylation followed by Knoevenagel condensation with barbituric acids 3 in… Expand
An Expedient Method for the Synthesis of 6‐Substituted Uracils under Microwave Irradiation in a Solvent‐Free Medium.
α-Cyclisation of Tertiary Amines: Synthesis of Some Novel Annelated Quinolines via a Three-Component Reaction under Solvent-Free Conditions
Synthesis of some novel classes of quinolizine-, indolizine- and pyrido-1,4-oxazine-fused quinoline derivatives via a three-component reaction under solvent-free conditions by exploring the 'tertiary… Expand
A novel microwave-assisted one-pot synthesis of pyrano[2,3-d]pyrimidines and pyrido[2,3-d]pyrimidines via a three component reaction in solvent-free condition
Three-component cyclocondensation of barbituric acids 1, triethylorthoformate 2 and alkyl nitriles 3 in presence of acetic anhydride proceeds under microwave-assisted conditions to give… Expand