2,3-dimethoxy-3-hydroxyflavanone;3-hydroxy-2,3-dimethoxy-2-phenyl-chroman-4-one;Methyl-3-hemiketal des 2-Methyl-3,4-flavandions;2-Methoxy-3,4-flavondionmethyl-3-halbketal;3-Hydroxy-2,3-dimethoxy-2-phenyl-2,3-dihydro-4H-chromen-4-one;3-hydroxy-2,3-dimethoxy-2-phenylchromen-4-one
Oxidation of Flavonols Using Lead(IV) Acetate in Acidic Methanol
作者:Devinder Kumar、Om V. Singh
DOI:10.1080/00397919208019315
日期:1992.5
Abstract Oxidation of Flavonols (1a-h) and 6-propionyl-flavonols (1i-j) to 2,3-dimethoxy-3-hydroxyflavanones (2a-h) and 2,3-dimethoxy-3-hydroxyflavanones (2i-j), respectively using lead(IV) acetate in methanol in presence of perchloric acid and the mechanism of this transformation has been described.
Copper(II)-catalysed oxidation of quercetin and 3-hydroxyflavone
作者:Masanori Utaka、Akira Takeda
DOI:10.1039/c39850001824
日期:——
Quercetin and 3-hydroxyflavone are oxidized to the corresponding 2-alkoxyflavan-3,4-diones by CuCl2 catalysis in MeOH or EtOH under oxygen or nitrogen, the mechanism of which is proposed.
Condensation reactions of dialkoxy-2-phenylchroman-4-ones with 1,2-diamines: A method for the preparation of chromenoquinoxalines
作者:Hannah Watkins、Gerald Lee、Pangbewindin H.B. Ouedraogo、Clifford W. Padgett、Khoa Nguyen、Rylan Artis、Brandon P. Quillian
DOI:10.1016/j.tetlet.2023.154820
日期:2023.11
rearranging upon heating to form a reactive dione intermediate that subsequently reacts with phenylenediamine derivatives to produce the title compounds. Reactions of 1 and 2 with asymmetric phenylenediamines led to mixtures of two regioisomers, for which the major products were dictated by the relative reactivity of the nucleophilic amine and the electrophilic carbonyl groups. The chromenoquinoxaline products