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Glycals halogens

Glycals, for example D-glucal (23), being vinyl ethers are susceptible to acid catalysed additions of alcohols which result in the formation of 2-deoxyglycosides, but elimination reactions accompany additions of this type 86) go such products are better prepared by way of halogen adducts or by the alkoxymercuration reaction (see below). On the other hand, the addition procedure can be more suitable than the alcoholysis... [Pg.54]

The reaction has found little application so far however, one of the first examples of an asymmetric synthesis using peroxidases was the highly regio- and diastereo-selective halohydration of glycals to 2-deoxy-2-halo sugars in the presence of CPO [263]. Some examples of selective halogenation reactions of aromatic compounds using CPO optimized by directed evolution approaches are also known [264]. [Pg.62]

Arylation Reactions with Halogenated Aromatic Rings Coupling of Substituted Glycals with Aryl Groups... [Pg.286]

See other pages where Glycals halogens is mentioned: [Pg.331]    [Pg.315]    [Pg.155]    [Pg.331]    [Pg.315]    [Pg.155]    [Pg.55]    [Pg.235]    [Pg.235]    [Pg.20]    [Pg.55]    [Pg.140]    [Pg.141]    [Pg.261]    [Pg.216]    [Pg.491]    [Pg.101]    [Pg.144]    [Pg.145]    [Pg.62]    [Pg.265]    [Pg.19]    [Pg.54]    [Pg.55]    [Pg.102]    [Pg.99]    [Pg.109]    [Pg.17]    [Pg.373]    [Pg.265]    [Pg.228]    [Pg.229]    [Pg.165]    [Pg.262]    [Pg.331]    [Pg.332]    [Pg.115]    [Pg.703]    [Pg.726]    [Pg.741]    [Pg.794]    [Pg.2034]    [Pg.388]    [Pg.148]    [Pg.229]    [Pg.146]    [Pg.246]    [Pg.315]   
See also in sourсe #XX -- [ Pg.228 ]



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Glycal

Glycals halogenation

Glycals halogenation

Halogenation of glycals

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