Uracils: versatile starting materials in heterocyclic synthesis

Wamhoff, H., Dzenis, J., Hirota, K., Uracils Versatile Starting Materials in Heterocyclic Synthesis, 55, 129. 

Uracils Versatile Starting Materials in Heterocyclic Synthesis. 55, 129. 

A lot of information about the structure, reactivity, and the best synthetic approaches for pyrimidopyrimidines has been described in CHEC-I. Additionally, some new methods of preparation of pyrimidopyrimidines have been reported in reviews on the synthesis of fused pyrimidines by Delia and Warner starting material in heterocyclic synthesis by Wamhoff, Dzenis, and Hirota <92AHC(55)129>. Pyrimidopyrimidines are especially interesting as structural analogues of natural compounds. 

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