在吡啶基二膦配体(C 6 H 5)(C 5 H 4 N)P(CH 2)n -P(C 6 H 5)(C 5 H 4 N)(n = 1,DPyPM; n = 2,DPyPE; n = 3,DPyPP)与(β-二酮酸酯)Rh(COD),只有磷原子与铑配位。DPyPE和DPyPP配合物与二氯甲烷反应,最终得到吡啶基-吡啶类配合物[(β-二酮酸酯)Rh(Cl)(CH 2 NC 5 H 4)(C 6 H 5)P(CH 2)n P(C 6 H 5)(C 5 H 4 N)] Cl。如果在反应中使用芳基-二膦(C 6 H 5) 2 P(CH 2) n P(C 6 H 5) 2,则可以分离被认为是中间体的(氯)(氯甲基)配合物。吡啶基-吡啶基络合物[[(didiivaloylmethanate)Rh(Cl)(CH 2已经通过X射线衍射确定了DPyPE)] Cl。铑原子被β-二酮酸酯的两个氧原子,一个轴向氯和一
Catalyst composition containing diphosphines having heterocyclic
申请人:Shell Oil Company
公开号:US04960747A1
公开(公告)日:1990-10-02
Diphosphines having at least one heterocyclic substituent that includes at least one oxygen, sulphur, or nitrogen atom in a five or six membered ring are useful components in palladium catalyst compositions which have been used to polymerize carbon monoxide and olefinically unsaturated compounds. Remaining substituents, if any, are carbocyclic hydrocarbon groups such as phenyls which are preferably substituted with polar groups in a ring position ortho to the phosphorus. The phosphorus atoms in the diphosphine are connected by a bridging group that contains at least one carbon atom.
Catalytic compositions for the polymerization of carbon monoxide with an olefin
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0305012A2
公开(公告)日:1989-03-01
Catalytic compositions comprising
(a) a palladium compound,
(b) an anion of an acid having a pKa of less than 6, and
(c) a diphosphine of the general formula R₉R₁₀P-R-PR₁₁R₁₂, wherein R₉ to R₁₂ stand for carbocyclic hydrocarbyl groups or heteroaromatic substituents and R represents a bridging group containing at least one carbon atom in the bridge, with the proviso that at least one of R₉ to R₁₂ is a heteroaromatic substituent. The heteroaromatic substituent should contain one or more O, S and/or N-atoms in a five or six-membered ring, which ring is bound to the P-atom by a carbon ring-atom.
The catalysts are active in the preparation of linear alternating polyketones.
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0441446A1
公开(公告)日:1991-08-14
A catalyst system, which comprises:
a) a source of a Group VIII metal;
b) a phosphine having an aromatic substituent which contains an imino nitrogen atom;
c) a source of protons; and
d) a tertiary amine.
催化剂系统,包括
a) 第 VIII 族金属源;
b) 具有包含亚氨基氮原子的芳香取代基的膦;
c) 质子源;以及
d) 一种叔胺。
Synthesis and coordination chemistry of a new class of binucleating ligands: pyridyl-substituted diphosphines
作者:Peter H. M. Budzelaar、John H. G. Frijns、A. Guy Orpen
DOI:10.1021/om00118a050
日期:1990.4
Carbonylation catalyst process
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.