Photoinduced Synthesis of New Diisochromenochromen-4-ones and Their Antimicrobial Activities


The diisochromenochromen-4-one 3a-3b, 4a-4c, 5a-6a  & 7 have been prepared from the photocyclization reaction of bischromen-4-one 2a-2e. The later compounds are obtained from the O-alkylation of the suitable 3-hydroxy-2-aryl-4H-chromen-4-one 1a-1e with 4,4'-bischloromethyl-diphenyl in dry acetone, anhydrous K₂CO₃, and PTC (Bu₄N⁺I⁻) under refluxing… (More)
DOI: 10.1100/2012/954934


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