تحضير فلافانونات جديدة من جالكونات متعددة الهيدروكسيل

Abstract

AbstractThis work is concerned with the synthesis of _unsaturated carbonyl compounds namly chalcones (1-10), through condensation of 2,5_dihydroxy acetophenone with different homo and hetero aromatic aldehydes under basic medium. These chalcones are used as synthones in synthesizing the target flavanones (11-20), via cyclization reaction using sodium hydroxide or sulfuric acid in absolute ethanol