Oxidation catalysis of Nb (salan) complexes: asymmetric epoxidation of allylic alcohols using aqueous hydrogen peroxide as an oxidant

H Egami, T Oguma, T Katsuki

Index: Egami, Hiromichi; Oguma, Takuya; Katsuki, Tsutomu Journal of the American Chemical Society, 2010 , vol. 132, # 16 p. 5886 - 5895

Full Text: HTML

Citation Number: 81

Abstract

Several optically active Nb (salan) complexes were synthesized, and their oxidation catalysis was examined. A dimeric μ-oxo Nb (salan) complex that was prepared from Nb (O i Pr) 5 and a salan ligand was found to catalyze the asymmetric epoxidation of allylic alcohols using a urea− hydrogen peroxide adduct as an oxidant with good enantioselectivity. However, subsequent studies of the time course of this epoxidation and of the relationship ...

Related Articles:

Stereoselective synthesis of the styryllactones, 7-epi-goniodiol and leiocarpin A, isolated from Goniothalamus leiocarpus

[Chen, Jian; Lin, Guo-Qiang; Liu, Han-Quan Tetrahedron Letters, 2004 , vol. 45, # 43 p. 8111 - 8113]

Biomimetic Iron??Catalyzed Asymmetric Epoxidation of Aromatic Alkenes by Using Hydrogen Peroxide

[Gelalcha, Feyissa Gadissa; Anilkumar, Gopinathan; Tse, Man Kin; Brueckner, Angelika; Beller, Matthias Chemistry - A European Journal, 2008 , vol. 14, # 25 p. 7687 - 7698]

Novel α-amino acid-based hydroxamic acid ligands for vanadium-catalyzed asymmetric epoxidation of allylic alcohols

[Journal of the American Chemical Society, , vol. 122, # 42 p. 10452 - 10453]

Arabinose-derived ketones as catalysts for asymmetric epoxidation of alkenes

[Journal of Organic Chemistry, , vol. 70, # 18 p. 7279 - 7289]

Regio-and enantioselective hydrolysis of phenyloxiranes catalyzed by soluble epoxide hydrolase

[Tetrahedron Asymmetry, , vol. 11, # 22 p. 4451 - 4462]

More Articles...