[EN] ENANTIOMERICALLY ENRICHED AMINODIPHOSPHINES AS LIGANDS FOR THE PREPARATION OF CATALYSTS FOR ASYMMETRIC SYNTHESIS<br/>[FR] AMINODIPHOSPHINES ÉNANTIOMÉRIQUEMENT ENRICHIES COMME LIGANDS POUR LA PRÉPARATION DE CATALYSEURS POUR UNE SYNTHÈSE ASYMÉTRIQUE
申请人:ENANTIA S L
公开号:WO2011098160A1
公开(公告)日:2011-08-18
The present invention relates to enantiomerically enriched aminodiphosphine ligands where the chirality is located in the phosphorus atom and their preparation process, to catalysts containing them and their preparation process, as well as their use in asymmetric synthesis.
Enantiomerically Enriched Aminodiphosphines as Ligands for the Preparation of Catalysts for Asymmetric Synthesis
申请人:Alonso Xalma Mónica
公开号:US20120309997A1
公开(公告)日:2012-12-06
The present invention relates to enantiomerically enriched aminodiphosphine ligands where the chirality is located in the phosphorus atom and their preparation process, to catalysts containing them and their preparation process, as well as their use in asymmetric synthesis.
Iridium-catalysed homogeneous hydrogenation of prochiral enamides containing tetrasubstituted alkene moieties
作者:Luis A. Oro、Javier A. Cabeza、Carlos Cativiela、María D. Díaz de Villegas、Enrique Meléndez
DOI:10.1039/c39830001383
日期:——
The tetrasubstitutedprochiral amido-alkenes (1a, b), (2a, b), and (3b) have been homogeneously hydrogenated under very mild conditions by iridium complexes of the type [Ir(cod)(bzn)(L)][ClO4](cod = cyclo-octa-1,5-diene, bzn = benzonitrile, L = tricyclohexylphosphine or neomenthyldiphenylphosphine).
Synthesis of Methyl (<i>Z</i>)-2-Acetamido-3-aryl-2-butenoates in Two Highly Selective Steps
作者:C. Cativiela、M. D. Diaz De Villegas、E. Meléndez
DOI:10.1055/s-1986-31660
日期:——
Diazomethane reacts with methyl (Z)-2-acetamido-3-aryl-2-propenoates regio- and stereospecifically to afford cis-4-aryl-3-acetamido-3-methoxycarbonyl-Î1-pyrazolines which heated in 1,2-ethanediol at 200°C extrude nitrogen to afford stereospecifically methyl (Z)-2-acetamido-3-aryl-2-butenoates in high yields.