[Heterocyclic compound syntheses with ortho-esters].
D000143:Acids / Q000737:chemistry*; D004952:Esters; D006571:Heterocyclic Compounds / Q000737:chemistry*
D000143:Acids; D004952:Esters; D006571:Heterocyclic Compounds
ACIDS/chemistry; HETEROCYCLIC COMPOUNDS/chemistry