Catalytic Asymmetric Synthesis. Группа авторов

Catalytic Asymmetric Synthesis - Группа авторов


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[72]. Incorporation of a sulfonamide group on the binaphthyl backbone of the catalyst proved to be optimal. Interestingly, modification of the sulfonamide for a benzamide on the catalyst allowed the analogous α‐sulfenylation to proceed in high enantioselectivity using N‐(arylthiol)phthalimides as the electrophilic sulfenylation reagent.

Schematic illustration of enantioselective alpha-hydroxylation of oxindoles.

      Source: Based on [74].

Schematic illustration of enantioselective alpha-amination of beta-ketoesters using azodicarboxylates.

      4.2.2. Transition‐Metal/Chiral Cation Dual Catalysis

Schematic illustration of enantioselective alpha-amination of oxindoles using hydroxylamines.

      Source: Based on [80].

Schematic illustration of enantioselective oxidation of sulfides using a peroxomolybdate/chiral cation ion pair catalyst.

      Source: Based on [81].

Schematic illustration of enantioselective transformations via transition metal/chiral cation ion pairing catalysis.
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