Synthetic approach to fused azasultams with 1, 2, 4-thiadiazepine framework via base
promoted protocols has been developed. 1H-Azole-2-carboxylates and N-(chloromethyl)-N …

A simple, clean and benign route to the synthesis of 2H-chromen-2-ones derivatives through
one-pot condensation of β-ketoesters and substituted phenols in the presence of 1 …

A convenient sequence for the preparation of 2-(4-chlorophenyl)-1-(2, 4-dimetoxyphenyl)-3-
(dimethylamino) prop-2-en-1-one has been developed. It has been demonstrated that the …

The interaction of 7-hydroxyneoflavone-6-enamino ketone with 8-dialkylamino-7-hydroxy-3-
hetarylbenzopyran-2-and 4-ones led to the formation of 10-methyl-4-phenyl-2 H, 6 H-pyrano …

A two-step synthesis of 6-(5-isoxazolyl) coumarins was developed. Recyclization of 7-
hydroxychromones by hydroxylamine into 4-(5-isoxazolyl)-1, 3-benzenediols followed by …

The efficient synthesis of enaminoketones of 2′-carboxamidodeoxybenzoins and
subsequent transformation into 1-oxo-3-aryl-1H-isochromene-4-carbaldehydes via an …

4H,8H-Pyrano[2,3-f]chromene-4,8-diones as versatile precursors for the synthesis of 6-(1,2-oxazol-5-yl)-2H-chromene-2-ones
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A two-step synthesis of 6-(3-pyrazolyl) coumarins starting from 7-hydroxy (acetoxy)
chromones was developed. It included their recyclization using hydrazine hydrate into 4-(3 …

Convenient synthetic method for 6-substituted derivatives of 4-methylumbelliferone |
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Spectral-fluorescent properties of 6-pyrazolyl-4-methylubbelliferone have been investigated
in comparison with 4-methylumbelliferone and its methyl ester. Abnormally large Stokes …