Sulfenylation of heterocyclic 1,3-dicarbonyl systems: 4-Hydroxy-2-pyrones, 6-hydroxy-4-pyrimidones, 4-hydroxy-2-pyridones, 4-hydroxy-6-pyridazinones, and 5-hydroxy-3-pyrazolones

Article abstract of DOI:10.1002/jhet.5570370439

Anions of enolized heteroaromatic 1,3-dicarbonyl systems, such as the title compounds 1, 9, 14, and 19, react in dimethylformamide in the presence of potassium carbonate with diaryl disulfides 2 to yield arylsulfenyl derivatives (3, 10, 15, 20). The arylt