title: [Synthesis of various pyrano-pyrimidines and of a pyrano-pyrazolone].
mesh_terms: D000447:Aldehydes; D000475:Alkenes; D001463:Barbiturates; D055598:Chemical Phenomena; D002621:Chemistry; D011714:Pyrans / Q000138:chemical synthesis; D011720:Pyrazoles / Q000138:chemical synthesis*; D011743:Pyrimidines / Q000138:chemical synthesis*
chemical_list: D000447:Aldehydes; D000475:Alkenes; D001463:Barbiturates; D011714:Pyrans; D011720:Pyrazoles; D011743:Pyrimidines
vernacular_title: Uber die Darstellung einiger Pyrano-pyrimidine und eines Pyrano-pyrazolons.