[EN] CATALYST COMPOUNDS<br/>[FR] COMPOSÉS DE TYPE CATALYSEUR
申请人:UNIV LIVERPOOL
公开号:WO2013153407A1
公开(公告)日:2013-10-17
The present invention relates to an iridium-based catalyst compound for hydrogenating reducible moieties, especially imines and iminiums, the catalyst compounds being defined by the formulas: where ring B is either itself polycyclic, or ring B together with R is polycyclic. The catalysts of the invention are particularly effective in reductive amination procedures 10 which involve the in situ generation of the imine or iminium under reductive hydrogenative conditions.
The present invention relates to an iridium-based catalyst compound for hydrogenating reducible moieties, especially imines and iminiums, the catalyst compounds being defined by the formulas: where ring B is either itself polycyclic, or ring B together with R is polycyclic. The catalysts of the invention are particularly effective in reductive amination procedures
10
which involve the in situ generation of the imine or iminium under reductive hydrogenative conditions.
Direct arylation of the ortho‐CHbond of an aryl pyridine or an aryl imine with an aryl Grignard reagent has been achieved by using an iron‐diamine catalyst and a dichloroalkane as an oxidant in a short reaction time (e.g., 5 min) under mild conditions (0 °C). The use of an aromatic co‐solvent, such as chlorobenzene and benzene, and slow addition of the Grignard reagent are essential for the high
Cobalt-Catalyzed Ortho Alkylation of Aromatic Imines with Primary and Secondary Alkyl Halides
作者:Ke Gao、Naohiko Yoshikai
DOI:10.1021/ja403759x
日期:2013.6.26
alkylation of aromatic imines with alkyl chlorides and bromides, which allows the introduction of a variety of primary and secondaryalkyl groups at room temperature. The stereochemical outcomes of the reaction of secondaryalkylhalides suggest that the present reaction involves single-electrontransfer from a cobalt species to the alkylhalide to generate the corresponding alkyl radical. A cycloalkylated
Cobalt-Phenanthroline Catalysts for the ortho Alkylation of Aromatic Imines under Mild Reaction Conditions
作者:Ke Gao、Naohiko Yoshikai
DOI:10.1002/anie.201101823
日期:2011.7.18
with phenanthroline‐type ligands and activated with Grignard reagents serve as inexpensive and effective catalysts for the ortho alkylation of aromaticimines with a variety of olefins (see scheme). The new catalytic systems feature remarkably mild reaction conditions for CH bond activation and functionalization.