Dissolve 1 g of rounded bottoms bridge tank diosmetin 2 neck, add 50 ml of delicacy, the tray comes when quercetin dissolved. Add next 6 g K2CO3, add from 2.5 ml (CH3) SO4 by drip funnel. Boil the mixture and save tracking feedback response by chromatography a thin lip using CHCl3-MeOH system (50-1). Following the reaction mixture was vacuum filtered to remove solid parts, filter is she turns under reduced pressure obtained crude product. Crystallized many times crude products in methanol obtained essential products with 0.6 volumes, 60% performance
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