title: Purines, pyrimidines, and imidazoles. Part XLIV. Syntheses of some dihydro-1,3-oxazine derivatives and related substituted uracils.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D008722:Methods; D010078:Oxazines / Q000138:chemical synthesis*; D014498:Uracil / Q000031:analogs & derivatives* / Q000138:chemical synthesis
chemical_list: D010078:Oxazines; D014498:Uracil