55991-67-8Relevant articles and documents
Synthesis of 1,4-benzothiazinones from acylpyruvic acids or furan-2,3-diones and o -aminothiophenol
Dmitriev, Maksim V.,Maslivets, Andrey N.,Stepanova, Ekaterina E.
, p. 2322 - 2331 (2020)
Two synthetic approaches to enaminones fused to 1,4-benzothiazin-2-one moiety, which can be interesting in studies on biological activity, chemosensors, and fluorescence, were developed via the reaction of furan-2,3-diones or acylpyruvic acids in the presence of carbodiimides with o-aminothiophenols. The target enaminones were formed together with pharmaceutically interesting 2-hydroxy-2H-1,4-benzothiazin-3(4H)-ones. A selective synthetic approach to 2-hydroxy-2H-1,4-benzothiazin-3(4H)-ones was developed via the solvent-switchable reaction of furan-2,3-diones with o-aminothiophenol. Preliminary biological assays (antimicrobial, acute toxicity) of the new compounds were carried out.
Luminous organic semiconductor framework material as well as applications
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Paragraph 0060; 0061; 0063-0066, (2019/04/10)
The invention discloses a luminous organic semiconductor framework material as well as applications: by arranging heteroatoms, such as N, O and S, on the same end of an aromatic fused ring, the molecule is induced to generate static dipole moment; then through the intermolecular forces, such as intermolecular hydrogen bonds, dipolar-dipolar interaction and the like, the stacking microstructure ofthe molecule under aggregation state, the luminous performance of the material, emitting color of the material, and carrier transport performance of the material are regulated. The product has excellent luminescence property under aggregation state.
Reactions of acylpyruvic acids and 2,3-dihydrofuran-2,3-diones with 2,3-diaminopyridine
Sof'ina,Igidov,Koz'minykh,Trapeznikova,Kasatkina,Koz'minykh
, p. 1017 - 1025 (2007/10/03)
Acylpyruvic acids readily react with 2,3-diaminopyridine to form (Z)-3-acylmethylene-1H-3,4-dihydropyrido[2,3-b]pyrazin-2-ones. 5-Aryl-2,3-dihydrofuran-2,3-diones which can be regarded as lactones derived from γ-enolized aroylpyruvic acids react with 2,3-diaminopyridine under mild conditions, yielding regioisomeric (Z)-2-aroylmethylene-4H-1,2-dihydropyrido[2,3-b]pyrazin-3-ones. The structure of the products and reaction chemoselectivity are discussed.