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Title

GREEN METHODOLOGIES IN ORGANIC SYNTHESIS: GRINDING ASSISTED SOLVENT-FREE AND CATALYST-DABCO SYNTHESIS OF CHROMENES BY THREE COMPOUND

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Abstract

 1,4-DIAZABICYCLO[2.2.2]OCTANE (DABCO)-CATALYZED ONE-POT THREE-COMPONENT CONDENSATION REACTION OF AROM. ALDEHYDES, ETHYL CYAN OACETATE AND 2-NAPHTHOL PROCEEDED IN GRINDING TO AFFORD CORRESPONDING 2-AMINO-4H-CHROMENES IN HIGH TO EXCELLENT YIELDS AT ROOM TEMPERATURE CONDITIONS. USE OF NONTOXIC REACTION COMPONENTS, SHORT REACTION TIMES, ENVIRONMENTAL, EASY WORK-UP, AND HIGH YIELDS ARE SOME IMPORTANT ADVANTAGES OF THIS METHOD [1-3].

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