TRIARYL PHOSPHINE LIGANDS, PREPARATION METHOD THEREFOR, AND USE IN CATALYSING COUPLING REACTIONS
申请人:DONGGUAN STEPHEN CATALYST CO., LTD.
公开号:US20210147452A1
公开(公告)日:2021-05-20
Provided are triaryl phosphine ligands, as shown in general formulae Ia and Ib, or a mixture thereof, and a preparation method therefor. The invention addresses the deficiencies of biaryl phosphine ligands invented by Buchwald et al. Also provided are a triaryl phosphine coordinated palladium complex, a system composed of triaryl phosphine ligand and a palladium salt or complex, and a use of the triaryl phosphine coordinated palladium complex in catalysing organic reactions, in particular a use in catalysis of coupling reactions involving (pseudo)halogenated aromatic hydrocarbon as substrate.
[EN] 5-[3-[PIPERIDIN-1-YL]-3-OXO-PROPYL]-IMIDAZOLIDINE-2,4-DIONE DERIVATIVES AS ADAMTS 4 AND 5 INHIBITORS FOR TREATING E.G. OSTEOARTHRITIS<br/>[FR] DÉRIVÉS DE 5-[3-[PIPÉRIDIN-1-YL]-3-OXO-PROPYL]-IMIDAZOLIDINE-2,4-DIONE EN TANT QU'INHIBITEURS D'ADAMTS 4 ET 5 POUR LE TRAITEMENT, PAR EXEMPLE, DE L'ARTHROSE
申请人:GALAPAGOS NV
公开号:WO2017211667A1
公开(公告)日:2017-12-14
The present invention discloses 5-[3-[piperazin-l-yl]-3-oxo-propyl]-imidazolidine-2,4-dione derivatives according to Formula (I), wherein R1, R2, R3a, R3b, R6a, R6b, the subscript n and Cy are as defined herein. The present invention relates to compounds inhibiting ADAMTS 4 and 5 for the prophylaxis or treatment of inflammatory diseases or diseases involving degradation of cartilage or disruption of cartilage homeostasis, such as e.g. osteoarthritis.
[EN] ONE-STEP PROCESS FOR THE SYNTHESIS OF ALKYLATED METYRAPONE ANALOGS<br/>[FR] PROCÉDÉ EN UNE ÉTAPE POUR LA SYNTHÈSE D'ANALOGUES DE MÉTYRAPONE ALKYLÉS
申请人:ALBEMARLE CORP
公开号:WO2016105619A1
公开(公告)日:2016-06-30
Process for preparing metyrapone type compounds are generally described herein. In particular, one step process for preparing metyrapone type compounds are described herein. Such processes generally include an alpha-carbon arylation coupling reaction between 3-isobutyrylpyridine and 3-halopyridine compounds in the presence of a palladium catalyst and a phosphine ligand to form the metyrapone-type compounds.
[EN] TRIARYL PHOSPHINE LIGANDS, PREPARATION METHOD THEREFOR, AND USE IN CATALYSING COUPLING REACTIONS<br/>[FR] LIGANDS DE TRIARYLPHOSPHINE, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION DANS LA CATALYSE DE RÉACTIONS DE COUPLAGE<br/>[ZH] 三联芳单膦配体、它们的制备方法和在催化偶联反应中的用途