No abstract

Potassium Phosphate Catalyzed Efficient Synthesis of 3-Carboxycoumarins. -An efficient and fast synthesis of the title compounds (III) (11 examples) is achieved by reaction of salicylaldehyde (I) with Meldrum's acid using potassium phosphate as an inexpensive catalyst. -(UNDALE, K. A.; GAIKWAD, D. S.; SHAIKH, T. S.; DESAI, U. V.; PORE*, D. M.; Indian J.

Various salicylaldehydes (I) react with secondary amines (II) and malononitrile (III) affording benzopyranopyrimidines (IV) (12 examples) with intense fluorescence emission behavior under mild reaction conditions.

No abstract

No abstract