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Thioorthoesters

Scheme 5.12 Thioorthoesters in glycosylation and in the synthesis of (STaz)-glycosyl donors. Scheme 5.12 Thioorthoesters in glycosylation and in the synthesis of (STaz)-glycosyl donors.
Related to the above cyanoethylidene derivatives, thioorthoesters 231 also behave similarly, and can be activated with catalytic amounts of TrC104 to glycosylate trityl ethers [506,507]. By using the thioglycoside promoters NIS-TfOH [508] or I2 [254], glycosyl acceptors with free hydroxyls were glycosylated. [Pg.155]

Acylation of Water (Hydrolysis) with Imidothioates, Thioorthoesters and Ketene S,S-Acetals Acylation of Arenes and Carbanions under Formation of Carbon-Carbon Bonds... [Pg.435]

Thioorthoesters as well as a,a-dihalo sulfides and related compounds may be partially hydrolyzed to yield thiol carboxylic esters. This reaction has been utilized in a sarcomycin synthesis (equation 28). Ketene 5,5-acetals are also hydrolyzed with aqueous acid via dithioorthoesters as has n shown recently, and thiol carboxylic esters are obtained in good yields (equation 29). ... [Pg.445]

See other pages where Thioorthoesters is mentioned: [Pg.472]    [Pg.88]    [Pg.331]    [Pg.331]    [Pg.190]    [Pg.194]    [Pg.194]    [Pg.661]    [Pg.667]    [Pg.683]    [Pg.683]   
See also in sourсe #XX -- [ Pg.387 ]



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Thiol esters via hydrolysis of imidothioates, thioorthoesters

Thiol lactones via hydrolysis of imidothioates, thioorthoesters

Thioorthoesters hydrolysis

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