[EN] ASYMMETRIC ELECTROPHILIC FLUORINATION USING AN ANIONIC CHIRAL PHASE-TRANSFER CATALYST [FR] FLUORATION ÉLECTROPHILE ASYMÉTRIQUE UTILISANT UN CATALYSEUR DE TRANSFERT DE PHASE CHIRAL ANIONIQUE
ASYMMETRIC ELECTROPHILIC FLUORINATION USING AN ANIONIC CHIRAL PHASE-TRANSFER CATALYST
申请人:THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
公开号:US20140350253A1
公开(公告)日:2014-11-27
The discovery of distinct modes of asymmetric catalysis has the potential to rapidly advance chemists' ability to build enantioenriched molecules. As an example, the use of chiral cation salts as phase-transfer catalysts for anionic reagents has enabled a vast set of enantioselective transformations. A largely overlooked analogous mechanism wherein a chiral anionic catalyst brings a cationic species into solution is itself a powerful method. The concept is broadly applicable to a number of different reaction pathways, including to the enantioselective fluorocyclization of olefins, and dearomatization of aromatic systems with a cationic electrophile-transferring (e.g., fluorinating) agent and a chiral phosphate catalyst. The reactions proceed in high yield and stereoselectivity. The compounds and methods of the invention are of particular value, especially considering the scarcity of alternative approaches.
Asymmetric Electrophilic Fluorination Using an Anionic Chiral Phase-Transfer Catalyst
作者:Vivek Rauniyar、Aaron D. Lackner、Gregory L. Hamilton、F. Dean Toste
DOI:10.1126/science.1213918
日期:2011.12.23
A chiral phosphate ion plays a dual role, coaxing a fluorinating agent into solution and then catalyzing its reaction there.
一个手性磷酸根离子发挥双重作用,促使氟化试剂溶解,然后在其中催化其反应。
US9981977B2
申请人:——
公开号:US9981977B2
公开(公告)日:2018-05-29
[EN] ASYMMETRIC ELECTROPHILIC FLUORINATION USING AN ANIONIC CHIRAL PHASE-TRANSFER CATALYST<br/>[FR] FLUORATION ÉLECTROPHILE ASYMÉTRIQUE UTILISANT UN CATALYSEUR DE TRANSFERT DE PHASE CHIRAL ANIONIQUE
申请人:UNIV CALIFORNIA
公开号:WO2013096971A1
公开(公告)日:2013-06-27
The discovery of distinct modes of asymmetric catalysis has the potential to rapidly advance chemists' ability to build enantioenriched molecules. As an example, the use of chiral cation salts as phase-transfer catalysts for anionic reagents has enabled a vast set of enantioselective transformations. A largely overlooked analogous mechanism wherein a chiral anionic catalyst brings a cationic species into solution is itself a powerful method. The concept is broadly applicable to a number of different reaction pathways, including to the enantioselective fluorocyclization of olefins, and dearomatization of aromatic systems with a cationic electrophile-transferring (e.g., fluorinating) agent and a chiral phosphate catalyst. The reactions proceed in high yield and stereoselectivity. The compounds and methods of the invention are of particular value, especially considering the scarcity of alternative approaches.