Study of Microwave Irradiation Effect on Condensation of 6-R-3-Formylchromones with Active Methylene Compounds - Concepedia

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Study of Microwave Irradiation Effect on Condensation of 6-R-3-Formylchromones with Active Methylene Compounds

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1995

Year

Renata Gašparová, Margita Lácová

Collection of Czechoslovak Chemical Communications

Microwave Irradiation EffectChemical EngineeringEngineeringHeterocyclicPhotochemistryActive Methylene CompoundsSubsequent ReactionsOrganic ChemistryChemistryPhotochromismSynthetic ChemistryEnantioselective SynthesisMicrowave Synthesis

Abstract

Condensation of 6-R-3-formylchromones ( I ) with 3,3-dimethyl-1,3-cyclohexanedione ( II ), 1,3-indandione ( III ), 1,2e-biindenylidene-3,1e,3e-trione (bindone, IV ), 2-oxo-1,4-benzothiazine ( V ) and 3-oxo-2,3-dihydro-1-thia-3a,8-diazacyclopent[a]indene ( VI ) by the "classical" method, as well as condensation in a microwave oven, has been studied. Some subsequent reactions of these products are described.