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Wesseley-Moser rearrangement

The reversible ring-opening of the chromone system giving o-hydroxyphenyl-1,3-diketones 2 (see above) can also occur by acid catalysis. If a fiirther OH function is present in position 5, it also takes part in the recyclization. Chromones and especially flavones with an unsymmetrically substituted benzene ring undergo isomerization by this route when treated with strong acids (Wesseley-Moser rearrangement) e.g. 7 8 ... [Pg.263]

Westphal synthesis (quinolizinium ion) Wesseley-Moser rearrangement 338 Widmann-Stoermer synthesis (cinnoline) Willgerodt-Kindler reaction 98 Wittig reaction 329, 335... [Pg.632]

See other pages where Wesseley-Moser rearrangement is mentioned: [Pg.401]    [Pg.696]    [Pg.727]    [Pg.818]    [Pg.686]    [Pg.401]    [Pg.696]    [Pg.727]    [Pg.818]    [Pg.686]   
See also in sourсe #XX -- [ Pg.263 ]



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