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Algar-Flynn oxidation

Hydrogen peroxide sodium hydroxide Aurones from 2 -hydroxycfaalcones Algar-Flynn oxidation... [Pg.82]

The conversion of 2 -hydroxychalcones to 2-aryl-3-hydroxy-4f/-lbenzopyran-4-ones (flavonols) by alkaline hydrogen peroxide oxidation is known as the Algar-Flynn-Oyamada (AFO) reaction or AFO oxidation. ... [Pg.496]

Aminofiavones are also available from chalcones derived from 5-acetamino-2-hydroxyacetophenone (57JOC304). Oxidation by selenium dioxide leads to 6-acetaminoflavones which may be deacetylated to the 6-amino compound, whilst alkaline hydrogen peroxide affords the corresponding flavonols (461) in a typical Algar-Flynn-Oyamada reaction (64CB610). [Pg.824]

Algar-Flynn-Oyamada reaction. Alkaline hydrogen peroxide oxidation of o-hydroxyphenyl styryl ketones (chalcones) to flavonols via the intermediate dihydroflavonols. [Pg.36]

See other pages where Algar-Flynn oxidation is mentioned: [Pg.52]    [Pg.247]    [Pg.338]    [Pg.52]    [Pg.247]    [Pg.338]    [Pg.52]    [Pg.53]   
See also in sourсe #XX -- [ Pg.31 , Pg.237 ]

See also in sourсe #XX -- [ Pg.21 , Pg.181 ]



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