Wacker oxidation of alkenes using a fluorous biphasic system. A mild preparation of polyfunctional ketones
摘要:
Various alkenes are oxidized to the corresponding ketones using t-BuOOH in the presence of a palladium(II) catalyst bearing perfluorinated ligands using a biphasic solvent system of benzene and bromoperfluorooctane. (C) 1998 Elsevier Science Ltd. All rights reserved.
Various alkenes are oxidized to the corresponding ketones using t-BuOOH in the presence of a palladium(II) catalyst bearing perfluorinated ligands using a biphasic solvent system of benzene and bromoperfluorooctane. (C) 1998 Elsevier Science Ltd. All rights reserved.
Emergence of a Novel Catalytic Radical Reaction: Titanocene-Catalyzed Reductive Opening of Epoxides
The preparatively important catalytic opening of epoxides to β-titanoxy radicals via single-electron transfer (SET) is described. These radicals can be reduced to alcohols or participate in C−C bond-forming reactions. A key step in the catalytic cycle is the conceptually novel protonation of titanium−oxygen and −carbon bonds. Our method combines the advantages of radical reactions, e.g., high functional