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Carbanion-mediated fragmentation

Numerous synthetic approaches to anthracyclines are based on carbanion mediated cyclisations. These reactions often occur under mild conditions, allowing incorporation of highly functionalised precursors. Some approaches follow an initial base-catalysed coupling of two fragments by cyclisation under Friedel-Crafts conditions (previous section), while other strategies bring about both condensation and cyclisation under basic conditions. Syntheses based on closure of rings C, B or A have been described. [Pg.474]

Samarium Diiodide-Mediated Carbanion Fragmentation Studies... [Pg.336]

See other pages where Carbanion-mediated fragmentation is mentioned: [Pg.366]    [Pg.366]    [Pg.212]    [Pg.440]    [Pg.96]    [Pg.664]    [Pg.4]    [Pg.426]    [Pg.96]    [Pg.4103]    [Pg.43]    [Pg.43]    [Pg.248]   
See also in sourсe #XX -- [ Pg.365 , Pg.366 ]



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Samarium diiodide-mediated carbanion fragmentation

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