作者:Andrei V. Malkov、Louise Czemerys、Denis A. Malyshev
DOI:10.1021/jo900294h
日期:2009.5.1
Asymmetric V-catalyzed epoxidation of allylic alcohols can be carried out in water with chiral ligands, which incorporate sulfonamide and hydroxamic acid fragments. Furthermore, the reaction, notorious for its ligand-deceleration effect, in water turned into the ligand-accelerated process. By using this aqueous protocol, a range of allylic alcohols were epoxidized with up to 94% ee.
烯丙基醇的不对称V催化环氧化可以在带有手性配体的水中进行,该手性配体结合了磺酰胺和异羟肟酸片段。此外,以其配体-减速作用而臭名昭著的反应在水中转变为配体-加速过程。通过使用该水性方案,一系列的烯丙基醇被高达94%的ee环氧化。