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Asymmetric catalysis sigmatropic rearrangements

Stereoselective oxonium ylide reaction, in particular the asymmetric catalysis, has been a problem of considerable challenge in this field. Since the first report by McKervey and co-workers in the asymmetric induction in metal carbene-mediated ylide formation/[2,3]-sigmatropic rearrangement in 1992, there have been efforts being directed... [Pg.154]

Further study by Katsuki, McMillen, Hashimoto, and Wang improved the enantioselectivity up to a moderately high level.Wang and co-workers further extended the asymmetric catalysis to the [2,3]-sigmatropic rearrangement of propargyl sulfonium ylide to give allenic products with up to 81% ee (Equation (18))." ... [Pg.166]

See other pages where Asymmetric catalysis sigmatropic rearrangements is mentioned: [Pg.177]    [Pg.166]    [Pg.86]    [Pg.75]    [Pg.223]    [Pg.25]    [Pg.289]    [Pg.101]    [Pg.1209]    [Pg.1209]    [Pg.544]   
See also in sourсe #XX -- [ Pg.115 , Pg.116 , Pg.117 ]



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Asymmetric catalysis

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Sigmatropic -rearrangements rearrangement

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