Asymmetric epoxidation of functionalized cis-olefins catalyzed by chloroperoxidase
摘要:
Chloroperoxidase catalyzes the asymmetric epoxidation of functionalized cis-2-alkenes with excellent enantioselectivity and good yields, using tert-butyl hydroperoxide as the terminal oxidant. (C) 1999 Elsevier Science Ltd. All rights reserved.
Dalton communications. Carbonylation of organic halides catalysed by rhodium triethylphosphine complexes
作者:Michael C. Simpson、Marc J. Payne、David J . Cole-Hamilton
DOI:10.1039/dt9940002899
日期:——
Allyl and benzyl halides but not phenyl or propyl halides have been carbonylated in ethanol in the presence of rhodium triethylphosphine complexes to their respective butenoic or benzylic esters; no added base was required.
Stereochemical consequences in the deprotonation of enoates
作者:Paul Galatsis、Jeffrey J. Manwell、Scott D. Millan
DOI:10.1016/0040-4039(96)01144-6
日期:1996.7
A cyclic transition structure for the deprotonation of enoates was proposed to rationalize the geometry of the deconjugated olefin and the substrate reactivity patterns.
提出了一种用于烯键的去质子化的环状过渡结构,以合理化去共轭烯烃的几何形状和底物的反应模式。
Substitution nucleophile vinylique par le reactif de reformatsky catalysee par des complexes du nickel et du palladium zerovalents. Synthese d'esters β,γ-ethyleniques
作者:J.F. Fauvarque、A. Jutand
DOI:10.1016/s0022-328x(00)88980-9
日期:1981.4
Zerovalent complexes of palladium and nickel catalyse vinylic nucleophilic substitution by the Reformatsky reagent giving β,γ-ethylenic esters. Formation of a σ-vinylpalladium complex is the rate-determining step of the reaction.
申请人:The Board of Regents of the Nevada System of Higher Education on Behalf of the Unive. of Nevada
公开号:US20180118770A1
公开(公告)日:2018-05-03
Provided herein are N-heterocyclic phosphines (NHPs) useful in metal-free phosphorus-carbon bond forming reactions. Methods for preparing vinylphosphonates using NHPs also are provided. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Herein, we present a detailed kinetic and thermodynamic analysis of the anodic allylic esterification of alkenes as well as the bulk application of the anodic amination and esterification of nonactivated alkenes catalyzed by diselenides. The electrochemical study led to a comprehensive picture of the coupled electrochemical and chemical reaction steps. Cyclic voltammetry measurements are consistent