Abstract
A convenient and efficient route for synthesis of various derivatives of 3‐benzoyl‐4‐phenyl‐2‐(trifluoromethyl)pyrano[3,2‐c]chromen‐5(4H)‐one has been used via tandem Knoevenagel condensation–Michael addition and intramolecular cyclization sequence. These products have been synthesized in the presence of catalytic amount of metal–organic framework (MOF) and potassium carbonate as one‐pot, three‐component reaction. MOF catalyst has been separated easily with external magnet, and high purity of products has been obtained after washing with ethanol. This protocol has advantages of simplicity, mild condition, and high yield. More importantly, MOF has been easily recycled for three times.
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