The present invention provides a method for producing a reduction reaction product, wherein recovery of the reaction solvent and/or distillation is carried out after adding a nitrogen-containing compound into a reaction liquid of a reduction reaction that has been conducted using a transition metal complex. The present invention is capable of suppressing decrease in the optical purity of the reduction reaction product due to the transition metal complex used as a catalyst.
A new atropisomeric dihydrobenzofuran-based bisphosphine ligand 1 was easily prepared from 1,4-dibromo-2-fluorobenzene. This racemic bisphosphine (±)-1 was used as a ligand for the palladium-catalyzed Suzuki–Miyaura reaction of arylchloride with arylboronic acids and Hartwig–Buchwald amination of aryl bromides with aniline derivatives. The optical resolution of (±)-1 was also carried out by HPLC with
A process for producing an optically active amine compound, characterized by asymmetrically hydrogenating a prochiral carbon-nitrogen double bond in the presence of a ruthenium complex represented by general formula (1) or (2) (wherein P
represents an optically active diphosphine, X represents an anionic group, and Ar represents an optionally substituted arylene group).
RUTHENIUM COMPLEX AND METHOD FOR PREPARING OPTICALLY ACTIVE ALCOHOL COMPOUND
申请人:Nara Hideki
公开号:US20130041151A1
公开(公告)日:2013-02-14
The present invention provides a novel ruthenium complex which has an excellent catalytic activity in terms of reactivity for asymmetric reduction of a carbonyl compound and enantioselectivity, a catalyst using the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex. The present invention relates to a ruthenium complex having ruthenacycle structure, a catalyst for asymmetric reduction consisting of the ruthenium complex, and a method for preparing optically active alcohol using the ruthenium complex.
NOVEL RUTHENIUM COMPLEX AND PROCESS FOR PRODUCING OPTICALLY ACTIVE ALCOHOL COMPOUND USING SAME AS CATALYST
申请人:Hori Kiyoto
公开号:US20140187809A1
公开(公告)日:2014-07-03
The present invention provides a novel ruthenium complex which has an excellent catalytic activity in terms of reactivity for an asymmetric reduction of a carbonyl compound and enantioselectivity, a catalyst using the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex. The present invention relates to a ruthenium complex having a ruthenacycle structure, a catalyst for an asymmetric reduction consisting of the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex.