Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown
Published: May 2, 2025
Language: Английский
Organic & Biomolecular Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The multicomponent reaction of arylglyoxal, malononitrile, and indoles in DMF yields indole-linked β-cyano-enones, which serve as precursors for medicinally relevant 2-pyrrolones, 1,2-diketones, quinoxalines.
Language: Английский
Citations
0
Organic & Biomolecular Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Visible-light-mediated metal-free irreversible phototransformations of ortho-bihetaryl appended chalcones are reported. Isosteric replacement one the aryl residues with a chalcone fragment in diarylethene (terarylene) molecules leads to significant expansion synthetic capabilities these compounds, thereby opening up access wide range new functional materials. It was found for first time that protonation carbonyl group moiety ortho-bihetarylchalcones exclusively promotes 6π-photocyclization leading formation oxathia[5]helicenes, whereas 1,2,3,4-tetrasubstituted cyclobutanes preferably formed upon photolysis toluene presence triethylamine. The helicene framework is due visible light-induced 6π-electrocyclization hexatriene system bihetaryl chalcones, and [2 + 2]-photocycloaddition facilitated by aggregation molecules, which consequence head-to-head excimer π-π-stacking interactions naphthofuran polyaromatic systems. These results will provide valuable information on photocyclization analogues, can be used develop efficient protocols synthesis fused heteroaromatic frameworks promising materials applications material science, molecular electronics medicine.
Language: Английский
Citations
0
Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown
Published: May 2, 2025
Language: Английский
Citations
0