Diastereo- and Enantioselective Synthesis of Fluorine Motifs with Two Contiguous Stereogenic Centers
作者:Sudipta Ponra、Wangchuk Rabten、Jianping Yang、Haibo Wu、Sutthichat Kerdphon、Pher G. Andersson
DOI:10.1021/jacs.8b08778
日期:2018.10.24
motifs, in particular, chiral fluorine molecules with two contiguous stereogeniccenters, has attracted much interest in research due to the limited number of methods available for their preparation. Herein, we report an atom-economical and highlystereoselective synthesis of chiral fluorine molecules with two contiguous stereogeniccenters via azabicyclo iridium-oxazoline-phosphine-catalyzed hydrogenation
Designing P-Chirogenic 1,2-Diphosphinobenzenes at Both P-Centers Using P(III)-Phosphinites
作者:Jérôme Bayardon、Yoann Rousselin、Sylvain Jugé
DOI:10.1021/acs.orglett.6b01275
日期:2016.6.17
synthesis of P-chirogenic 1,2-diphosphinobenzenes (DP*B) bearing the chirality on one or both phosphorus centers is reported using aryne chemistry. The principle is based on successive reactions of 1,2-dibromobenzene with sec-phosphide boranes, then DABCO to remove the borane, and finally with chlorophosphines or P(III)-chirogenic phosphinites. The efficiency of this synthesis was demonstrated by the stereoselective
Chiral diphosphorus compounds and their transition metal complexes
申请人:Meseguer Benjamin
公开号:US20050080047A1
公开(公告)日:2005-04-14
The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.
Intramolecular 1,2 C−H Addition of
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‐Methyl Groups to Form Unique Ruthenium Pincer Tuck‐in Complexes
作者:Damien B. Culver、James M. Boncella
DOI:10.1002/cctc.202201587
日期:2023.3.8
New RPNHP ligands bearing aryl groups with ortho methyls coordinate to Ru to produce pincer complexes with normal coordination moieties. However, upon dehydrohalogenation the amide intermediate rapidly activates an ortho methyl C−H bond, adding it across the Ru−N bond forming new tuck-in complexes. Significant differences in reactivity are observed when the aryl group contains one or two ortho methyl
Chirale Diphosphorverbindungen und deren Übergangsmetallkomplex
申请人:Bayer Chemicals AG
公开号:EP1400527A1
公开(公告)日:2004-03-24
Die vorliegende Erfindung betrifft chirale Diphosphorverbindungen und deren Übergangsmetallkomplexe, ein Verfahren zur Herstellung chiraler Diphosphorverbindungen und deren Übergangsmetallkomplexe sowie deren Verwendung in asymmetrischen Synthesen.