Patents in Class 556/23

Matches 1 - 50 out of 236

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Match	Document	Document Title
1	7361776	Zero-valent transition metal complex and method for producing an organometallic compound using the same as a starting material The present invention relates to a zero-valent transition metal complex which can be used as a starting material for producing a catalyst usable for producing a polyolefin by ring-opening...
2	7276616	Phosphorous containing ligands for metathesis catalysts The use of a phosphorus containing Ligand as a Ligand for a metathesis catalyst in a catalysed metathesis reaction wherein the phosphorus containing Ligand is a heterocyclic organic compound with a...
3	7271121	Diimine metal complexes, methods of synthesis, and methods of using in oligomerization and polymerization Methods for making α-diimine metal complexes are described. The methods comprise forming an α-diimine metal complex imine bond in the presence of a metal salt or an α-acylimine metal complex....
4	7101959	Polymerization catalysts A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.
5	7094898	Ruthenium compounds, their production and use A new class of compounds is disclosed that in preferred embodiments relate to Ru-based catalysts suitable for use in olefin metathesis reactions. Such compounds demonstrate high rates of catalytic...
6	7081533	Cycloaliphatic/aromatic diphosphines and use thereof in catalysis The present invention concerns novel unsymmetrical chiral diphosphines of a mixed aliphatic-aromatic type and processes for synthesizing them, complexes of these compounds and their use as catalysts.
7	7019158	Chiral organometallic compounds for use in asymmetric synthesis Chiral organometallic compounds are provided which comprise certain non-symmetrically substituted cyclopentadiene complexed to a transition metal. The cyclopentadiene has a second coordinating...
8	6927262	Bridged biphospholes and metallocenes prepared therefrom The invention relates to novel bridged biphosphole ligands according to the general formula: where R 2 , R 3 , R 4 are chosen from hydrogen, alkyl, aryl or silyl, R 1 is chosen from...
9	6909009	Alkane and alkane group dehydrogenation with organometallic catalysts Novel polynuclear organometallic complexes useful as catalysts for the reversible deshydrogenation of alkanes and alkane group are disclosed. The novel compounds comprise a first transition, a...
10	6887820	Method for producing optically active compounds A method for producing optically active compounds is disclosed. The method is highly practical for producing optically active compounds useful for various utilities such as intermediates for...
11	6884859	Ring-opening metathesis polymerization of bridged bicyclic and polycyclic olefins containing two or more heteroatoms A method is provided for synthesizing a polymer in a controlled fashion using a ring-opening metathesis polymerization (ROMP) reaction, wherein polymerization is carried out using a catalytically...
12	6878665	Diphosphines, their complexes with transisition metals and their use in asymmetric synthesis The invention relates to novel diphosphines, in optically pure or racemic form, of formula (I): in which: R 1 and R 2 are a (C 5 -C 7 )cycloalkyl group, an optionally substituted...
13	6844442	Method for the preparation of metal carbene complexes The present invention provides a process for preparing a metal carbene complex of formula (I): wherein M is a transition metal atom selected from the group consisting of ruthenium, rhodium, iron,...
14	6800701	Polycyclic, fused ring compounds, metal complexes and polymerization process Compounds and metal complexes comprising a polycyclic, fused ring ligand or inertly substituted derivative thereof having up to 60 atoms other than hydrogen, said ligand comprising at least: (1) a...
15	6794525	Optically active chiral diphosphine ligands An (R) or (S) chiral diphosphine of formula (I): wherein R and R1, which can be identical or different, represent an optionally saturated C 1-10 alkyl group, an optionally saturated C 3-9 ...
16	6774254	Gold complexes Novel phosphino-gold (I) compounds, a process for their preparation, pharmaceutical compositions containing such phosphino-gold (I) compounds and their use in the treatment of cancer disease are...
17	6716787	Polymerisation catalyst A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.
18	6683198	Group(III)-metal-hydrides with a guanidino-type ligand A compound of formula (I) wherein X is aluminium, gallium or indium; each Y, which may be the same or different, is nitrogen or phosphorus; R 1 and R 2 , which may be the same or different, are...
19	6613923	Catalytic ionic hydrogenation of ketones using tungsten or molybdenum catalysts with increased lifetimes The present invention is a process for the catalytic hydrogenation of ketones and aldehydes to alcohols at low temperatures and pressures using organometallic molybdenum and tungsten complexes and...
20	6613910	One-pot synthesis of group 8 transition metal carbene complexes useful as olefin metathesis catalysts The invention provides a novel method for synthesizing transition metal carbene complexes useful as olefin metathesis catalysts. The method is a convenient one-pot synthesis in which transition...
21	6596887	Process for producing an optically active ruthenium-phosphine complex and process for producing an optically active alcohol by using the complex Provided is a process for preparing an optically active ruthenium-phosphine complex represented by the following formula (1): wherein L represents a bidentate ligand compound of a tertiary...
22	6559326	Substituted phosphinophenoxide-metal complexes for the polymerization of olefins Metal complexes obtainable from a metal precursor of a metal of the 6 th -10 th groups of the Periodic Table in the oxidation state 0 or +2 and a ligand of the formula I, where the radicals are...
23	6544918	Olefin polymerization catalysts containing chelating dianionic ligands A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and a complex that incorporates a Group 3 to 10 transition metal and at least one...
24	6515156	METHOD FOR PRODUCING AXIAL ASYMMETRIC COMPOUNDS, INTERMEDIATES FOR PRODUCING THE SAME, COMPLEXES OF TRANSITION METALS WITH NOVEL AXIAL ASYMMETRIC COMPOUNDS AS THE LIGANDS, CATALYSTS FOR ASYMMETRIC HYDROGENATION, AND CATALYSTS FOR FORMING ASYMMETRIC CARBON-CARBON BONDS The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1) [Each Ar represents an aryl group...
25	6515157	Ferrocenyldiphosphine-ruthenium complexes and a hydrogenation process of exocyclic double bond of d-thiophene to d-thiophane Ferrocenyldiphosphin-ruthenium complexes are new and good catalysts for the hydrogenation of exocyclic double bond of d-Thiophene 3 to d-Thiophane 4, both of which are intermediates of D-Biotin 1...
26	6508753	Chiral ligands for asymmetric catalysis A novel phosphine ligand is an enantiomerically enriched compound of formula 5 or the opposite enantiomer thereof, wherein Ar 1 and Ar 2 represent the same or different aromatic groups of up...
27	6504041	Synthesis of ruthenium or osmium metathesis catalysts The present invention relates to the synthesis of highly active ruthenium and osmium carbene metathesis catalyst in good yield from readily available starting materials. The catalysts that may be...
28	6500975	Cationic ruthenium complexes, their production and their use Cationic ruthenium complexes of the formula A or B or mixtures containing them, where B may be stabilized by a further ligand L 4 and X is an anion which does not coordinate or coordinates...
29	6486337	Ruthenium-disphosphine complexes and their use as catalysts The present invention concerns novel complexes, suitable in particular for use as catalysts in the asymmetric hydrogenation of ketones, of formula 1 or a diastereoisomer thereof, wherein each Ar...
30	6469169	Water soluble palladium complexes and process for the preparation thereof The invention provides a water soluble palladium complex of the general formula I wherein R 1 , R 2 , R 3 are substituents on phosphine ligands selected from the group consisting of hydrogen,...
31	6451724	Metallocenes and catalysts for olefin-polymerisation A class of metallocenes of formula (I): (ZR 1 m ) n (Cp)(A) r ML p L′ q (I) wherein (ZR 1 m ) n , is a divalent group bridging Cp and A, Cp is a heterocyclic cyclopentadienyl group of formula...
32	6403772	Open-pentadienyl metallocenes, precursors thereof and polymerization catalysts therefrom New metallocene compounds are described where the ligand contains at least one open-pentadienyl containing radical characterized by a cyclic or acyclic, six π electron, delocalized, five atomic...
33	6359165	Asymmetric hydrogenation of β-keto esters Enantiomerically pure β-hydroxy esters are prepared by a process in which β-keto esters are reacted with hydrogen in the presence of catalysts of the formula LRuX 2 where X is halogen, acetate,...
34	6323353	Complexes of transition metals with novel axial asymmetric compounds as the ligands The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1) ##STR1## The metal is rhodium, ruthenium,...
35	6232483	Polymerization of ethylene Certain nickel [II] complexes of selected ortho-phosphine substituted arylsulfonamides or selected phosphine containing alkylsulfonamides catalyze the polymerization of ethylene. The polymers...
36	6225488	Ruthenium or osmium catalysts for olefin metathesis reactions Penta-coordinated ruthenium or osmium catalysts for metathesis reactions of olefins, which are cationic complexes represented by formulas I, II or III: ##STR1## wherein M is ruthenium or osmium;...
37	6218559	Hydrogenation catalyst, process for the preparation thereof and hydrogenation process Reaction products of an iridium(III) salt or a hydrate thereof, a diphosphine having secondary phosphine groups and a metal or ammonium chloride, bromide or iodide are excellent hydrogenation...
38	6171994	Multiple crosslinking type transition metal compound used for olefin polymerization process A novel multiply crosslinked transition metal compound represented by the formula (I): ##STR1## wherein M is a metallic element of the Groups 3 to 10 or the lanthanide series of the Periodic Table;...
39	6133478	Catalyst and process for preparing amides A platinum complex useful as a catalyst for converting nitrites into amides comprises a platinum complex of dialkyl phosphine of stoichiometric formula: PtX(R 2 POHOPR 2 )(PR 2 OH) where R is an...
40	6096912	Soluble catalyst systems for the preparation of polyalk-1-enes having high molecular weights Abstract of the Disclosure: Catalyst systems for the polymerization of C 2 -C 10 -alk-1-enes contain, as active components, a) a metallocene complex of the general formula I ##STR1## where M...
41	6090739	Transition metal compound The present invention relates to a transition metal compound of the formula I ##STR1## where M 1 is a metal of group IIIb, IVb or Vb of the Periodic Table of the Elements, R 1 , R 2 , R 3 and...
42	6084033	Bimetallic complex catalyst systems, their preparations and application in the hydrogenation of unsaturated copolymers The present invention relates to a new bimetallic complex catalyst system having the empirical formula of M 1 a M 2 b X m (L 1 ) n , wherein M 1 is Rh or Ru, M 2 is Ru or a lanthanide, when M...
43	6084114	Dipalladaphosphacyclobutanes and a process for preparing the same The invention relates to palladaphosphacyclobutanes of the formula (I) ##STR1## where R 1 , R 2 are, independently of one another, hydrogen, (C 1 -C 4 )-alkyl, (C 3 -C 12 )-cycloalkyl, (C 1 -C...
44	6069253	Process for the preparation of new transition metal complexes The present invention relates to novel group VIII transition metal complexes represented by the formula (I) as: ##STR1## wherein M is the central transition metal; represents a semilabile anionic...
45	6069237	Open-pentadienyl metallocenen ligands, polymerization catalysts/catalyst precursors and polymers therefrom New metallocene ligand systems and catalysts/catalyst precursors are described where the ligand system contains at least one open-pentadienyl ligand characterized by an acyclic six π electron...
46	6057466	Palladium catalysts for polymerization Compounds, for initiating the polymerization of ethylenically unsaturated compounds, having the formula ##STR1## where E is nitrogen, phosphorus, arsenic or antimony, X is oxygen, NR 1 or...
47	5981782	Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same The present invention provides a catalyst which exhibits a high catalytic activity and allows asymmetric reaction in a high asymmetric yield to obtain a reaction product having a high optical...
48	5922634	Catalyst systems based on rhodium complexes containing diphosphine ligands and their use in the preparation of aldehydes A water-soluble catalyst composition comprising rhodium complexes containing diphosphine ligands, wherein the diphosphine ligands present are compounds of the formula ##STR1## where R 1 is...
49	5919962	Process for preparing ruthenium-phosphine complex Disclosed is a ruthenium-phosphine complex represented by formula (I): {RuX(L)} 2 (μ-X) 3 ! - R 2 NH 2 ! + (I) wherein R is hydrogen, an alkyl group having 1 to 5 carbon atoms, a...
50	5912376	Process for the preparation of catalysts A process for the preparation of a metal carbene, in which a metal salt is first reacted in the presence of a base and a secondary or tertiary alcohol with a tertiary phosphine or phosphite or a...

Matches 1 - 50 out of 236

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