SEARCH Articles Figures Tables Acetylenecarboxylic acids and esters, reactions with N-heterocyclic compounds Heterocycles reaction Heterocyclization reactions N-Heterocyclic compounds reaction of acetylenecarboxylic acids N-Heterocyclic compounds reaction of acetylenecarboxylic acids and N-Heterocyclic compounds reaction of acetylenecarboxylic acids and esters with Reactions of N-Heterocycles in Transition Metal Complexes