PROCESS FOR PRODUCING PHENYL-SUBSTITUTED HETEROCYCLIC DERIVATIVE THROUGH COUPLING USING TRANSITION METAL CATALYST
申请人:Komiyama Masato
公开号:US20110313169A1
公开(公告)日:2011-12-22
A process for efficiently producing, through few steps either a xanthine oxidase inhibitor, which is a therapeutic agent for hyperuricemia, or an intermediate therefore. The process is a novel coupling process which comprises subjecting a compound represented by formula (1) to coupling reaction with a compound represented by formula (2) in the presence of a transition metal compound to thereby obtain a compound represented by formula (3).
METHOD FOR PRODUCING PHENYL-SUBSTITUTED HETEROCYCLIC DERIVATIVE BY MEANS OF COUPLING METHOD USING PALLADIUM COMPOUND
申请人:Komiyama Masato
公开号:US20130158272A1
公开(公告)日:2013-06-20
The present invention provides a method for producing a xanthine oxidase inhibitor, which is a therapeutic agent for hyperuricemia, or intermediates of the same, said method being efficient and using a short process. The present invention is a novel coupling method for obtaining a compound represented by formula (3) by bringing about a coupling reaction between a compound represented by formula (1) and a compound represented by formula (2), in the presence of a palladium compound, a ligand capable of coordinating to the palladium compound, a base, a C
1
-C
40
carboxylic acid, and at least one kind of additive.
Improved rhodium catalyzed hydroformylation of internal olefins
申请人:EXXON CHEMICAL PATENTS INC.
公开号:EP0195656A1
公开(公告)日:1986-09-24
Internal olefins are rapidly hydroformylated in high selectivity to aldehyde product using homogeneous rhodium catalysts modified with highly sterically hindered tricycloalkyl phosphine ligands under mild process conditions.
Improved rhodium catalyzed hydroformylation of alpha-substituted alpha-olefins
申请人:EXXON CHEMICAL PATENTS INC.
公开号:EP0212991A1
公开(公告)日:1987-03-04
Alpha-substituted alpha-olefins are rapidly hydroformylated in high selectivity to aldehyde product using homogeneous rhodium catalysts modified with highly sterically hindered tricycloalkyl phosphine ligands under mild process conditions.
Ruthenium metathesis catalyst and method for producing olefin reaction product by metathesis reaction using the same
申请人:Takasago International Corporation
公开号:EP0927577A1
公开(公告)日:1999-07-07
The invention has an object of safely and simply preparing a large amount of a ruthenium metathesis catalyst, which is used as a catalyst for a carbon-carbon bond formation using, particularly, a metathesis reaction. The metathesis catalyst comprises the following complex composition (A) or (B). The composition (A) comprises (1) RuX12(arene)(PR1R2R3) and (i) R4CHX22, (ii) R5C≡CH or (iii) R4CHX22 and a reducing agent. The composition B comprises (4) [RuX12(arene)]2, (5) PR1R2R3, (6) (i) R5C≡CH or (ii) R4CHX22 and a reducing agent.