A series of new 3-[1-(6-Chloropyrimidin-4-yl)-5-phenyl-4,5-dihydro-1H-pyrazol-3-yl]-2H-chromen-2-one(5a-j) were synthesized by the reaction between 4-aryl substituted-3-(4,5-dihydro-1H-pyrazol-3-yl)-2H-chromen-2-ones (4a-j) and 4,6-Dichloro pyrimidine in the presence of pyridine. The former was obtained by cyclisation of coumarin chalcone derivatives with hydrazine hydrate. The structures of the synthesized compounds have been established by IR and 1H NMR dada. Further they have been screened for anti-inflammatory and antibacterial activities.
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