Method for the Preparation of Palladium(I) Tri-Tert-Butylphosphine Bromide Dimer and Process for its Use in Isomerization Reactions
申请人:Goossen Lukas
公开号:US20140187803A1
公开(公告)日:2014-07-03
The invention provides a new method for the preparation of the dimeric Pd(l) tri-tert.-butylphosphine bromide complex, characterized by the chemical formula [Pd(μ-Br)(P
t
Bu
3
)]
2
. The method is based on a comproportionation reaction in which a Pd(ll) compound (=PdBr
2
) is reacted with a Pd(0) compound (=Pd(P
t
Bu
3
)
2
) in organic solvents to yield the [Pd(μ-Br)(P
t
Bu
3
)]
2
compound having the Pd atoms in the formal oxidation state +1. Unreacted PdBr
2
may be reused in the process. The method is straightforward and applicable for industrial scale production and provides high product yields. Further, a new process for the isomerization of allyl ethers of the general type R
1
—C(O)—O—CH(R
2
)—C(R
3
)═CH
2
employing the compound Pdμ-Br)(P
t
Bu
3
)]
2
as a catalyst is disclosed.
METHOD FOR THE PREPARATION OF PALLADIUM(I) TRI-TERT-BUTYLPHOSPHINE BROMIDE DIMER AND PROCESS FOR ITS USE IN ISOMERIZATION REACTIONS
申请人:Umicore AG & Co. KG
公开号:EP2726202A1
公开(公告)日:2014-05-07
METHOD FOR THE PREPARATION OF PALLADIUM(I) TRI-TERT-BUTYLPHOSPHINE BROMIDE DIMER
申请人:Umicore AG & Co. KG
公开号:EP2726202B1
公开(公告)日:2018-05-16
US9192927B2
申请人:——
公开号:US9192927B2
公开(公告)日:2015-11-24
[EN] METHOD FOR THE PREPARATION OF PALLADIUM(I) TRI-TERT-BUTYLPHOSPHINE BROMIDE DIMER AND PROCESS FOR ITS USE IN ISOMERIZATION REACTIONS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN DIMÈRE DE BROMURE DE TRI-TERT-BUTYLPHOSPHINE-PALLADIUM(L) ET PROCÉDÉ D'UTILISATION DANS DES RÉACTIONS D'ISOMÉRISATION
申请人:UMICORE AG & CO KG
公开号:WO2013000874A1
公开(公告)日:2013-01-03
The invention provides a new method for the preparation of the dimeric Pd(l) tri - terf.-butylphosphine bromide complex, characterized by the chemical formula [Pd(μ-Br)(PtBu3)]2. The method is based on a comproportionation reaction in which a Pd(ll) compound (= PdBr2) is reacted with a Pd(0) compound (= Pd(PtBu3)2) in organic solvents to yield the [Pd(μ-Br)(PtBu3)]2 compound having the Pd atoms in the formal oxidation state +l. Unreacted PdBr2 may be reused in the process. The method is straightforward and applicable for industrial scale production and provides high product yields. Further, a new process for the isomerization of allyl ethers of the general type R1-C(O)-O-CH(R2)-C(R3)=CH2 employing the compound Pdμ-Br)(PtBu3)]2 as a catalyst is disclosed.