Synthesis of 4H-Pyranopyrimidines

Article abstract of DOI:10.1007/BF00809292

Good yields of substituted 5-(5R-2-furyl)-4H-pyrano<2,3-d>pyrimidines 4 were obtained in the reaction of 2-ethoxymethyleneamino-3-cyano-4H-pyranes 2 with ammonia.Compounds 2 were prepared by the condensation of the starting 2-amino-5-acetyl-3-cyano-6-meth