Vanadium-Catalyzed Asymmetric Epoxidation of Allylic Alcohols in Water
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.
Regio-and stero-selective γ-substitution of allylic nitro compounds with lithium dialkylcuprates
作者:Noboru Ono、Isami Hamamoto、Aritsune Kaji
DOI:10.1039/c39840000274
日期:——
Regio-and stereo-selective γ-Substitution of allylic nitro compounds with lithiumdialkylcuprates provides a new synthesis for trisubstituted olefins.
二烷基铜酸锂将烯丙基硝基化合物的区域和立体选择性γ取代为三取代的烯烃提供了新的合成方法。
Evidence for hyperconjugative stabilization of olefins from tautomeric equilibria
作者:Lloyd J. Dolby、Gary N. Riddle
DOI:10.1021/jo01286a043
日期:1967.11
Domino Carbopalladation−Carbonylation: Generating Quaternary Stereocenters while Controlling β-Hydride Elimination
作者:Brinton Seashore-Ludlow、Peter Somfai
DOI:10.1021/ol1009703
日期:2010.9.3
A domino carbopalladation-carbonylation sequence for substrates possessing beta-hydrogens is explored. This allows for the construction of complex architectures with vicinal stereocenters in a concise and rapid fashion via the stereocontrolled formation of two carbon carbon bonds. An integral aspect of this domino reaction is the ability to control beta-hydride elimination of the organopalladium intermediate and instead form the carbonylation product.