Scheme 1From: Synthesis and anticancer evaluation of some novel pyrimido[5,4-e][1,2,4]triazines and pyrazolo[3,4-d]pyrimidine using DMF-DMA as methylating and cyclizing agentReaction of 6-hydrazinyluracil with different aromatic aldehydes and formation of pyrimidotriazines. a = NaOH/H2O/Reflux; b = PrI/K2CO3/DMSO; c = NH2NH2.H2O/rt; d = ArCHO/EtOH/rt; e = NaNO2/AcOH/RefluxBack to article page