Three component one-pot reaction for synthesis of 2-thioxoquinazolin-4(1H)-ones are given by the condensation of isatoic anhydride, primary amine and phenyl isothiocyanate by using KF/Al2O3 as a environmentally friendly catalyst.
ABSTRACT1,4-Dihydropyridines oxidizes to pyridine derivatives by hydrogen peroxide in the presence of Copper(II) chloride as catalyst at room temperature.
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