title: [Diene like synthesis of dihydropyranes by acetolysis of Mannich bases (author's transl)].
mesh_terms: D008722:Methods; D011714:Pyrans / Q000138:chemical synthesis*
chemical_list: D011714:Pyrans
vernacular_title: Dienartige Synthesen von Dihydropyranen durch Acetolyse von Mannich-basen