SEARCH Articles Figures Tables 7,6-Acetylenecarboxylic acid esters Acetylenecarboxylate Acetylenecarboxylates Acetylenecarboxylic acids Acetylenecarboxylic acids and esters, reactions with Acetylenecarboxylic acids, reactions Acetylenecarboxylic acids, reactions with heterocyclic compounds Acidic compounds, reaction Compounds acids and Esters compounds Heterocycles reaction Heterocyclic acids Heterocyclic compounds acids with Heterocyclic compounds esters with Heterocyclic compounds, and Heterocyclization reactions N- esters N-Heterocyclic compounds and esters with N-Heterocyclic compounds esters with N-Heterocyclic compounds reaction of acetylenecarboxylic acids and esters with N-compounds N-heterocycles reactions Reaction with heterocycles