enantioselectivities in methanol as the solvent. This may account for optimised steric and electroniceffects. However, by changing the solvent catalysts with other backbones can give rise to excellent results. This gives proof that simple correlations between steric and electronic properties and results in the enantioselective hydrogenation frequently claimed in literature are not general.
[EN] METHOD FOR PRODUCING AMIDINE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRODUCTION DE DÉRIVÉS D'AMIDINE
申请人:BIOCRYST PHARM INC
公开号:WO2016029216A2
公开(公告)日:2016-02-25
The invention provides methods and intermediates useful in the synthesis of a compound of formula (I): or a pharmaceutically acceptable salt, solvate, ester or prodrug thereof; wherein the variables are as defined herein.
The present invention relates to ligands of the general formula (I). In addition, a process for the production thereof and the use thereof are demonstrated.
本发明涉及通式(I)的配体。此外,还展示了其制备过程和使用方法。
Process For The Preparation Of Enantiomerically Enriched Beta Amino Acid Derivatives
申请人:Xiao Yi
公开号:US20080058522A1
公开(公告)日:2008-03-06
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives wherein the amino group is unprotected. The product chiral beta amino acid derivatives are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of an amine-unprotected prochiral beta-amino acrylic acid or derivative thereof in the presence of a rhodium metal precursor complexed with a chiral mono- or bisphosphine ligand.
The present invention relates to ligands of the general formula (I).
In addition, a process for the production thereof and the use thereof are demonstrated.