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Peroxyhemiketal

Trioxanes were prepared through the intramolecular oxymercuration of various allylic peroxyhemiacetals and peroxyhemiketals . For example, 1,2,4-trioxanes... [Pg.285]

Quite recently, List and coworkers observed that when hydrogen peroxide is used as an oxidant, the same reaction furnishes stable and isolable cyclic peroxyhemike-tals [26]. When using the primary amine catalyst 20-trichloroacetic acid (10 mol%), the oxidation of both linear and branched acyclic enones with aqueous hydrogen peroxide (3 equiv) at 30 °C in dioxane gave the peroxyhemiketals 26 in reasonable yields with high enantioselectivities (94—95% ee) (Scheme 5.20). Cyclic peroxyhemiketals were further transformed via a simple protocol (treatment with 1 N NaOH)... [Pg.119]

Table 1.2 List s asymmetric peroxyhemiketal fonnation and transformation to epoxides or alcohols... Table 1.2 List s asymmetric peroxyhemiketal fonnation and transformation to epoxides or alcohols...
See other pages where Peroxyhemiketal is mentioned: [Pg.285]    [Pg.285]    [Pg.137]    [Pg.134]    [Pg.120]    [Pg.480]    [Pg.763]    [Pg.197]    [Pg.1372]    [Pg.30]    [Pg.285]    [Pg.285]    [Pg.137]    [Pg.134]    [Pg.120]    [Pg.480]    [Pg.763]    [Pg.197]    [Pg.1372]    [Pg.30]   
See also in sourсe #XX -- [ Pg.30 , Pg.31 ]



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Cyclic peroxyhemiketals

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