Abstract
An efficient and facile synthesis of biologically active 14-substituted-14-H-dibenzo[ a, j] xanthene derivatives were reported via three-component condensation reaction of β-naphthol and aldehydes in the presence of a catalytic amount of Preyssler type heteropoly acid, under solvent-free conditions. This method is very easy, rapid and high yielding reaction for the synthesis of dibenzo xanthene derivatives.
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