Synthesis of Condensed Pyrimidine Derivatives from Heterocyclic Amines and 1,3-Dicarbonyl Compounds
Condensation of 2-amino-5-phenyl-1,3,4-oxadiazole (Ia) with ethyl acetoacetate in the presence of PPA gives 7-methyl-2-phenyl-5H-1,3,4-oxadiazolopyrimidin-5-one (IVa).However, a similar reaction of Ia using catalytic amounts of p-toluenesulphonic a
Dehuri, S. N.,Pradhan, P. C.,Nayak, A.
p. 815 - 816
(2007/10/02)
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