SYNTHESIS OF COUMARIN DERIVATIVES BASED ON MELDRUM ACID AND ITS ANALOGUES.
Khaitova.J.M AmanovaTermez branch of Tashkent State Technical University named after Islam Karimov
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The article studied the interaction of malonic acid and acetic anhydride with ketones, aldehydes of the fatty, aromatic and carbocyclic series (yields from 16 to 76%). Based on experimental and physical data, it is proved that Meldrum acid exists in solutions in the form of an equilibrium mixture of rapidly convertible conformers.
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