Immobilization of a Modified Tethered Rhodium(III)-p-Toluenesulfonyl-1,2-diphenylethylenediamine Catalyst on Soluble and Solid Polymeric Supports and Successful Application to Asymmetric Transfer Hydrogenation of Ketones
Catalystimmobilization through covalent attachment onto a support is one strategy to provide recyclable systems. Here, soluble and surface-functionalized solid polymers were used as supports for a modified tethered rhodium(III)-p-toluenesulfonyl-1,2-diphenylethylenediamine [Rh(III)-TsDPEN] complex. The supportedcatalysts were applied to the asymmetric transfer hydrogenation of phenyl ketones in aqueous
New Chromium(III) Complexes with Imine−Cyclopentadienyl Ligands: Synthesis, Characterization, and Catalytic Properties for Ethylene Polymerization
作者:Lei Zhang、Wei Gao、Xin Tao、Qiaolin Wu、Ying Mu、Ling Ye
DOI:10.1021/om1005935
日期:2011.2.14
Free ligands HL1−HL4 were prepared by the condensation reaction of 2-(tetramethylcyclopentadienyl)benzaldehyde with 2,6-dialkylaniline. The free ligands were characterized by 1H NMR spectroscopy, while the chromium(III) complexes were characterized by elemental analyses and single-crystal X-ray crystallography. The X-ray crystallographic analysis indicates that the imine N atom in these complexes coordinates
一系列与(2-(((芳基)甲基)苯基)四甲基环戊二烯基配体,2-(ArN═CH)C 6 H 4 Me 4 CpCrCl 2(Ar = 2,6- Me 2 C 6 H 3(1),2,6-Et 2 C 6 H 3(2),2,6- i Pr 2 C 6 H 3(3),4-MeC 6 H 4(4)),由CrCl 3反应合成与相应配体的锂盐2-(ArN═CH)C 6 H 4 Me 4 CpLi(Ar = 2,6-Me 2 C 6 H 3(Li L 1),2,6-Et 2 C 6 H 3(Li L 2),2,6- i Pr 2 C 6 H 3(Li L 3),4-MeC 6 H 4(Li L 4))。游离配体H L 1 -H L 4通过2-(四甲基环戊二烯基)苯甲醛与2,6-二烷基苯胺的缩合反应制备。游离配体通过1 H NMR光谱表征,而铬(III)络合物通过元素分析和单晶X射线晶体学表征。X射线晶体
Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same
申请人:——
公开号:US20040242410A1
公开(公告)日:2004-12-02
The present invention relates to a transition metal complex represented by the formula (I):
1
wherein M represents a Group 4 transition metal;
—Y— represents
(a): —C(R
1
)(R
20
)-A-,
(b): —C(R
1
)(R
20
)-A
1
(R
30
)—,
(c): —C(R
1
)=A
1
-, or
(d): —C(R
1
)=A
1
-A
2
-R
30
;
A represents a Group 16 element and A
1
and A
2
each represents a Group 15 element;
R
1
to R
9
, R
20
, and R
30
are the same or different and each represents an optionally substituted hydrocarbon group, etc.; and X
1
and X
2
are the same or different and each represents a hydrogen atom, a halogen atom, an optionally substituted C
1-10
alkyl group, etc., and an intermediate product thereof, and a catalyst for olefin polymerization which comprises said transition metal complex as a component.
TRANSITION METAL COMPLEX, CATALYST FOR OLEFIN POLYMERIZATION, AND PROCESS FOR PRODUCING OLEFIN POLYMER WITH THE SAME
申请人:HANAOKA Hidenori
公开号:US20100048933A1
公开(公告)日:2010-02-25
The present invention relates to a transition metal complex represented by the formula (I):
wherein M represents a Group 4 transition metal;
—Y— represents
(a): —C(R
1
)(R
20
)-A-,
(b): —C(R
1
)(R
20
)-A
1
(R
30
)—,
(c): —C(R
1
)=A
1
-, or
(d): —C(R
1
)=A
1
-A
2
-R
30
;
A represents a Group 16 element and A
1
and A
2
each represents a Group 15 element;
R
1
to R
9
, R
20
, and R
30
are the same or different and each represents an optionally substituted hydrocarbon group, etc.; and X
1
and X
2
are the same or different and each represents a hydrogen atom, a halogen atom, an optionally substituted C
1-10
alkyl group, etc., and an intermediate product thereof, and a catalyst for olefin polymerization which comprises said transition metal complex as a component.
New Titanium(IV) Complexes with 2-Cyclopentadienylbenzylamido Ligands: Synthesis, Characterization, and Catalytic Properties for Ethylene Polymerization and Copolymerization with 1-Hexene
作者:Xin Tao、Qiaolin Wu、Hang Huo、Wei Gao、Ying Mu
DOI:10.1021/om4003945
日期:2013.8.12
between the cyclopentadienyl plane and the attached phenyl plane in these complexes (59.2, 62.7, and 61.9° for complexes 1, 2, and 4, respectively) is much less than 90° in the solid state. Upon activation with AliBu3 and Ph3CB(C6F5)4, complexes 1–4 exhibit reasonable catalytic activity for ethylene homopolymerization and copolymerization with 1-hexene at 110 °C, producing high-molecular-weight polyethylenes
与2-(四甲基环戊二烯基)苄基酰胺配体,2-Me 4 CpC 6 H 4 CH 2(R)NTiCl 2(R = i Pr(1),Cy(2)螯合的一系列新的半三明治钛(IV)配合物,n Pr(3),4-MePh(4)),是由TiCl 4与双三甲基甲硅烷基取代的预配体2-Me 4(TMS)CpC 6 H 4 CH 2(R)的氯三甲基硅烷消除反应合成的N(TMS)(R = i Pr(TMS 2 L1),Cy(TMS 2 L2),n Pr(TMS 2 L3),4-MePh(TMS 2 L4))。游离配体ħ 2 L1 -H 2 L4通过还原相应的亚胺的合成化合物2-ME 4 CPHC 6 ħ 4 CH═NR用的LiAlH 4,而由2-tetramethylcyclopentadienylbenzaldehyde的缩合反应形成的亚胺化合物进行原位与相应的胺。游离配体通过LC-MS和1 H NMR谱表征,钛配合物通过1