RHODIUM CATALYST AND METHOD FOR PRODUCING AMINE COMPOUND
申请人:TAKEDA PHARMACEUTICAL COMPANY LIMITED
公开号:US20150051416A1
公开(公告)日:2015-02-19
[Problem] Provision of a superior rhodium catalyst and a production method of amine compound.
[Solving Means] A rhodium complex coordinated with a compound represented by the formula
提供一种优质的铑催化剂和胺化合物的生产方法。采用与公式表示的化合物配位的铑络合物。
Rhodium(I)-Catalyzed Intermolecular Hydroacylation of α-Keto Amides and Isatins with Non-Chelating Aldehydes
作者:Kevin G. M. Kou、Lauren E. Longobardi、Vy M. Dong
DOI:10.1002/adsc.201500313
日期:2015.7.6
sphine‐propane (dcpp), in rhodium(I)‐catalyzed intermolecularketonehydroacylation is herein described. Isatins and α‐keto amides are shown to undergo hydroacylation with a variety of non‐chelating linear and branched aliphatic aldehydes. Also reported is the synthesis of new bidentate chiral phosphine ligands, and their application in hydroacylation is discussed.
Asymmetric heterogeneous hydrogenation of acetylacetone was applied for the preparation of both enantiomers (2R,4R and 2S,4S) of 2,4-bis(diphenylphosphino)pentane (BDPP). Among the chiral phosphines prepared up to now BDPP appears to be unique in the sense that its rhodium(I) complexes serve as effective homogeneous asymmetrichydrogenation catalysts not only for the reduction of Z-α-amidoacrylic acids
Asymmetric hydroformylation of styrene catalysed by platinum-tin complexes with chiral bis-binaphthophosphole ligands
作者:Serafino Gladiali、Davide Fabbri、Làszlò Kollar
DOI:10.1016/0022-328x(94)05253-8
日期:1995.4
reaction of the bis(BNP) compounds with platinum(II) derivatives gives either cis chelate mononuclear complexes or trans phosphorus-bridged polynuclear derivatives. The latter can be converted into the mononuclear species by warming them in the presence of SnCl2. Coordination to platinum enhances the conformational stability of 3 and 4 and separate diastereomeric complexes can be detected in solution up to
An optically active bisaryl compound represented by the general formula (I): ##STR1## wherein Ar.sub.1 and Ar.sub.2 represent each a phenyl, naphthyl, biphenyl or pyrimidylphenyl group optionally substituted with an alkyl, alkoxy, cyano or cycloalkyl group or a halogen atom, and * represents an asymmetric carbon atom, which can give a cholesteric phase of a short helical pitch when added to nematic liquid crystals useful as a component of a liquid crystal mixture for a display device.