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A one-pot reaction of resorcinol, malononitrile and benzaldehyde in tracing amount of methanol and 0.1 % sodium carbonate solution and at room temperature on vigorous stirring given 2-amino-7-hydroxy-4-phenyl-4H-1benzopyran-3-carbonitrile which on O-alkylation in presence of dry potassium carbonate in dry acetone at 70-80 0 C with 1,2-chloroethyl pyrrolidine,1,2-chloroethyl piperidine, 1,2-cholro ethyl morpholine given ethoxy pyrollidine , ethoxypiperidine and ethoxymorpholine substituted benzopyran intermediates, which on further reaction with formic acid and urea, in specific reaction conditions cyclize the amino and carbonitrile part in substrate and converted into different novel chromeno carboxy and amino derivatives of pyrimidine.

MULTIFARIOUS STAGE SYNTHESIS OF UNIQUELY SUBSTITUTED CHROMENO DERIVATIVES OF CARBOXY AND AMINO PYRIMIDINE