杂二膦基o- C 6 H 4(CH 2 P t Bu 2)(CH 2 PPh 2)的钯配合物是乙烯的加氢甲氧基羰基化反应的高选择性和强固催化剂
摘要:
报道了二膦基o- C 6 H 4(CH 2 P t Bu 2)(CH 2 PPh 2)(L 3)的配位化学和乙烯加氢甲氧基羰基化催化反应,并将结果与对称的二膦基o-的类似化学反应进行了比较。 ç 6 ħ 4(CH 2 P吨卜2)2(大号1)和邻- C ^ 6 ħ 4(CH 2 PPH2)2(L 2)。报道了在商业催化条件下钯催化的乙烯加氢甲氧基羰基化的研究。使用所获得的结果大号1 - 3作为支持配体表明,来源于催化剂大号3和大号1具有用于丙酸甲酯(MEP)相似的活性和选择性。另外,Pd- L 3催化剂具有比Pd- L 1催化剂更长的寿命。用L 3处理适当的[Pt(X)(Y)(cod)]得到[PtCl 2(L 3)](3),[Pt(CH 3)2(L 3)](6)和[PtCl(CH 3)(L 3)](9)。在平衡时,络合物9是几何异构体9a(具有CH 3转化为t Bu 2 P)和9b(具有Cl转化为t
[EN] PROCESS FOR THE CARBONYLATION OF ETHYLENICALLY UNSATURATED COMPOUNDS, NOVEL CARBONYLATION LIGANDS AND CATALYST SYSTEMS INCORPORATING SUCH LIGANDS<br/>[FR] PROCÉDÉ DE CARBONYLATION DE COMPOSÉS À INSATURATION ÉTHYLÉNIQUE, NOUVEAUX LIGANDS DE CARBONYLATION, ET SYSTÈMES CATALYSEURS COMPRENANT CES LIGANDS
申请人:LUCITE INT UK LTD
公开号:WO2010001174A1
公开(公告)日:2010-01-07
A novel bidentate catalytic ligand of general formula (I) is described. R represents a hydrocarbyl aromatic structure having at least one aromatic ring to which Q 1 and Q 2 are each linked, via the respective linking group, if present, on available adjacent atoms of the at least one aromatic ring. The groups X 3 and X 4 represent radicals joined via tertiary carbon atoms to the respective atom Q 1 and the groups X 1 and X 2 represent radicals joined via primary, or substituted aromatic ring carbon atom(s) to the respective atom Q 2. A and B represent an optional lower alkylene linking group. Q 1 and Q 2 each represent phosphorus, arsenic or antimony. A process for the carbonylation of ethylenically unsaturated compounds comprising reacting the compound with carbon monoxide in the presence of a source of hydroxyl groups, optionally, a source of anions and catalyst system obtainable by combining a metal of Group 8, 9 or 10 or a compound thereof and the bidentate ligand of general formula (I) is also described.
PROCESS FOR THE CARBONYLATION OF ETHYLENICALLY UNSATURATED COMPOUNDS, NOVEL CARBONYLATION LIGANDS AND CATALYST SYSTEMS INCORPORATING SUCH LIGANDS
申请人:Eastham Graham Ronald
公开号:US20110137059A1
公开(公告)日:2011-06-09
A novel bidentate catalytic ligand of general formula (I) is described. R represents a hydrocarbyl aromatic structure having at least one aromatic ring to which Q
1
and Q
2
are each linked, via the respective linking group, if present, on available adjacent atoms of the at least one aromatic ring. The groups X
3
and X
4
represent radicals joined via tertiary carbon atoms to the respective atom Q
1
and the groups X
1
and X
2
represent radicals joined via primary, or substituted aromatic ring carbon atom(s) to the respective atom Q
2
. A and B represent an optional lower alkylene linking group. Q
1
and Q
2
each represent phosphorus, arsenic or antimony. A process for the carbonylation of ethylenically unsaturated compounds comprising reacting the compound with carbon monoxide in the presence of a source of hydroxyl groups, optionally, a source of anions and catalyst system obtainable by combining a metal of Group 8, 9 or 10 or a compound thereof and the bidentate ligand of general formula (I) is also described.
Palladium Complexes of the Heterodiphosphine <i>o-</i>C<sub>6</sub>H<sub>4</sub>(CH<sub>2</sub>P<sup>t</sup>Bu<sub>2</sub>)(CH<sub>2</sub>PPh<sub>2</sub>) Are Highly Selective and Robust Catalysts for the Hydromethoxycarbonylation of Ethene
作者:Tamara Fanjul、Graham Eastham、Natalie Fey、Alex Hamilton、A. Guy Orpen、Paul G. Pringle、Mark Waugh
DOI:10.1021/om100049n
日期:2010.5.24
[Pt(X)(Y)(cod)] with L3 gave [PtCl2(L3)] (3), [Pt(CH3)2(L3)] (6), and [PtCl(CH3)(L3)] (9). At equilibrium, complex 9 is a 90:1 mixture of geometric isomers 9a (with CH3 trans to the tBu2P) and 9b (with Cl trans to the tBu2P). The fluxionality of complex3, detected by 1H NMR, is interpreted in terms of the conformation of the seven-membered chelate. The complexes [Pt(CH3)(PMe3)(L3)]Cl (10b) and [PtH(PPh3)(L3)]Cl
报道了二膦基o- C 6 H 4(CH 2 P t Bu 2)(CH 2 PPh 2)(L 3)的配位化学和乙烯加氢甲氧基羰基化催化反应,并将结果与对称的二膦基o-的类似化学反应进行了比较。 ç 6 ħ 4(CH 2 P吨卜2)2(大号1)和邻- C ^ 6 ħ 4(CH 2 PPH2)2(L 2)。报道了在商业催化条件下钯催化的乙烯加氢甲氧基羰基化的研究。使用所获得的结果大号1 - 3作为支持配体表明,来源于催化剂大号3和大号1具有用于丙酸甲酯(MEP)相似的活性和选择性。另外,Pd- L 3催化剂具有比Pd- L 1催化剂更长的寿命。用L 3处理适当的[Pt(X)(Y)(cod)]得到[PtCl 2(L 3)](3),[Pt(CH 3)2(L 3)](6)和[PtCl(CH 3)(L 3)](9)。在平衡时,络合物9是几何异构体9a(具有CH 3转化为t Bu 2 P)和9b(具有Cl转化为t
Synthesis and characterisation of novel o-xylene-based P,E ligands
作者:Kathryn M. Allan、John L. Spencer
DOI:10.1039/c3ob42244e
日期:——
substrate with the appropriate nucleophilic reagent, or preparation of a Grignard reagent from o-C6H4CH2PBut2(BH3)}(CH2Cl) and reaction with the appropriate electrophile. In most cases, this versatile strategy produced air-stable crystalline ligand precursors. Phosphine deprotection was achieved via one of three methods, dependent upon the properties of the second functional group. An alternative synthesis
一系列新型杂配体,类型为o -C 6 H 4(CH 2 PBu t 2)(CH 2 E)(E = P(C 6 F 5)2,SBu t,SPh,S(O)Bu t,NR 2,SiPh 2 H)从共同的底物o -C 6 H 4 CH 2 PBu t 2(BH 3)}(CH 2)分两步或三步合成Cl)。初始步骤包括用适当的亲核试剂处理底物,或从o -C 6 H 4 CH 2 PBu t 2(BH 3)}(CH 2 Cl)制备格氏试剂,并与适当的亲电子试剂反应。在大多数情况下,这种通用策略可生产出空气稳定的晶体配体前体。取决于第二官能团的性质,通过三种方法之一实现了膦的脱保护。已知配体o -C 6 H 4(CH 2 PBu t 2)(CH 2 PPh 2)也被提出。