Nitrogen Bonded Directly To The Metal Patents (Class 556/137)
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Patent number: 6458832Abstract: The synthesis and the use of a series of carboplatin analogs is disclosed. These carboplatin analogs may be represented by cis-Pt(II)L1L2, wherein each of L1 and L2, independently, is the carboxylate of phosphatidylserine, an &agr;-amino acid, a &bgr;-amino acid, or a derivative thereof, wherein each ligand is bidentate with —NH2 and —COO− as the binding sites. The complexes can be used in the treatment of cancer.Type: GrantFiled: April 18, 2000Date of Patent: October 1, 2002Assignee: Unitech Pharmaceuticals, Inc.Inventor: Jiajiu Shaw
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Patent number: 6458962Abstract: Biologically active sultams are disclosed which have potent anti-HIV activity. Solution methods of syntheses, which use a new catalyst for the asymmetric reduction of a C═N intermediate, are described. Biological compositions and method of treating mammals for viral infections with compositions comprising the sultams of the invention, especially HIV are described.Type: GrantFiled: October 1, 1999Date of Patent: October 1, 2002Assignee: The University of Tennesseee Research CorporationInventors: Jiammin Mao, David C. Baker
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Patent number: 6452053Abstract: Compounds of the formula (R1R1)N—X—N(R1R1) (I) are claimed, where R1 and X have the meanings given in the description.Type: GrantFiled: April 20, 2001Date of Patent: September 17, 2002Assignee: Clariant GmbHInventors: Claudia Fischer, Jörg Issberner, Fritz Vögtle
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Patent number: 6444818Abstract: A method of forming a film on a substrate using transition metal or lanthanide complexes. The complexes and methods are particularly suitable for the preparation of semiconductor structures using chemical vapor deposition techniques and systems.Type: GrantFiled: August 30, 2001Date of Patent: September 3, 2002Assignee: Micron Technology, Inc.Inventors: Stefan Uhlenbrock, Brian A. Vaartstra
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Patent number: 6433270Abstract: ORGANOMETALLIC COORDINATION complexes exhibiting two separate, stable forms are described. Conversion from one form to the other is intramolecular, reversible, light-activated (a molecular switch) and occurs both in the solid and in solution. The two forms differ in photochemical and electrochemical characteristics (different colors and reduction potentials). The complexes can be used in information storage and for light-gathering, light-emitting, sensing and detecting applications.Type: GrantFiled: September 25, 2000Date of Patent: August 13, 2002Assignee: California Institute of TechnologyInventor: Jeffrey J. Rack
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Patent number: 6420583Abstract: This invention is directed to a method for synthesizing a carbonyl based compound under neat conditions comprising refluxing a metal carbonyl compound with an excess of neutral ligand to produce a first mixture; evaporating any excess neutral ligand from the first mixture to produce a second mixture; and distilling the second mixture to produce the carbonyl based compound.Type: GrantFiled: September 27, 2001Date of Patent: July 16, 2002Assignee: Praxair Technology, INCInventors: Michael Alexander Lienhard, Cynthia A. Hoover
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Patent number: 6413953Abstract: An improved platinum(IV) compound and its application as an antitumor agent are disclosed.Type: GrantFiled: October 4, 2000Date of Patent: July 2, 2002Assignee: AnorMED Inc.Inventors: Christen M. Gianomenico, Ernest S. Y. Wong
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Publication number: 20020072625Abstract: The present invention relates to chelate-fluorophore conjugates and their use in monitoring binding reactions between a chelate and a macromolecular biological binding agent, such as an antibody. Such monitoring is used both to identify anti-chelate antibodies that have a desired metal selectivity and to configure immunoassays that provide a means of detecting and quantitating a given metal ion.Type: ApplicationFiled: December 9, 2000Publication date: June 13, 2002Inventor: David Kenneth Johnson
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Patent number: 6403738Abstract: Various olefins may be polymerized using a catalyst systems containing selected &agr;-diimine, urethane or urea ligands, some of them novel, complexed to nickel, palladium or other selected transition metals. The polymers are useful as molding resins and elastomers.Type: GrantFiled: July 28, 1999Date of Patent: June 11, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Lynda Kaye Johnson, Lissa Taka Jennings Nelson
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Patent number: 6395668Abstract: It is disclosed a new catalyst system for the polymerization of olefins comprising the product obtainable by contacting the following components: (A) one or more compounds of a late transition metal belonging to Group 8-11 of the Periodic Table; and (B) the reaction product of water with one or more organometallic aluminum compounds of formula (IV): Al(CH2—CR3R4R5)xR6yHz, wherein R3 is a C1-C20 alkyl, C3-C20 cycloalkyl or C7-C20 alkylaryl radical; R4 is different from a straight alkyl and is a C3-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; or R3 and R4 form together a C4-C6 ring; R5 is hydrogen or a C1-C20 alkyl, C6-C20 aryl, C7-C20 alkylaryl or arylalkyl radical; R6 is a C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; x is 1-3; z is 0-1; and y is 3−x−z; the molar ratio between said organometallic aluminum compound and water being comprised between 0.5:1 and 100:1.Type: GrantFiled: June 13, 2001Date of Patent: May 28, 2002Assignee: Basell Technology Company BVInventors: Jan F. van Baar, Peter A. Schut, Andrew D. Horton, Tiziano Dall'Occo
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Publication number: 20020062037Abstract: A method of forming an iridium-containing film on a substrate, from an iridium-containing precursor thereof which is decomposable to deposit iridium on the substrate, by decomposing the precursor and depositing iridium on the substrate in an oxidizing ambient environment which may for example contain an oxidizing gas such as oxygen, ozone, air, and nitrogen oxide. Useful precursors include Lewis base stabilized Ir(I)&bgr;-diketonates and Lewis base stabilized Ir(I) &bgr;-ketoiminates. The iridium deposited on the substrate may then be etched for patterning an electrode, followed by depositing on the electrode a dielectric or ferroelectric material, for fabrication of thin film capacitor semiconductor devices such as DRAMs, FRAMs, hybrid systems, smart cards and communication systems.Type: ApplicationFiled: December 6, 2001Publication date: May 23, 2002Inventors: Thomas H. Baum, Chongying Xu
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Publication number: 20020058768Abstract: Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst and a solid support. The polymers are suitable for processing in conventional extrusion processes, and can be formed into high barrier sheets or films, or low molecular weight resins for use in synthetic waxes in wax coatings or as emulsions.Type: ApplicationFiled: October 30, 2001Publication date: May 16, 2002Inventors: Peter Borden Mackenzie, Leslie Shane Moody, Christopher Moore Killian, Gino Georges Lavoie
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Patent number: 6388130Abstract: The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1) The metal is rhodium, ruthenium, iridium or nickel.Type: GrantFiled: June 7, 2001Date of Patent: May 14, 2002Assignee: Takasago International CorporationInventors: Sumi Kenzo, Noyori Ryoji, Ikariya Takao
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Publication number: 20020049190Abstract: A compound of the formulaType: ApplicationFiled: March 17, 2000Publication date: April 25, 2002Inventors: Gary J. Bridger, Beth R. Cameron, Simon P. Fricker, Michael J. Abrams, Renato Skerlj, Ian Baird
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Patent number: 6372931Abstract: A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, particularly those comprising chiral centers. The hydrogen donor is advantageously a secondary alcohol or a mixture of triethylamine and formic acid. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral. Catalysts for use in such a process are also provided.Type: GrantFiled: November 9, 1999Date of Patent: April 16, 2002Assignee: Avecia LimitedInventors: Andrew John Blacker, Ben James Mellor
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Patent number: 6365562Abstract: Laundry detergents and cleaners which, in addition to a peroxide compound, comprise a compound of the formula (R1R1)N—X—N(R1R1) (I) or metal complexes thereof, where X and R1 have the meanings listed in the description, are claimed.Type: GrantFiled: April 20, 2001Date of Patent: April 2, 2002Assignee: Clariant GmbHInventors: Claudia Fischer, Nicole Reichardt, Jörg Issberner
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Patent number: 6365539Abstract: This invention is directed to novel Group 8-10 transition metal catalysts and to batch or continuous polymerizations using these catalysts. The catalysts of the present invention readily convert ethylene and &agr;-olefins to high molecular weight polymers, and allow for olefin polymerizations under various conditions, including ambient temperature and pressure, and in solution. Preferred catalysts are group 8-10 transition metals having certain dipyridyl ligands bonded thereto.Type: GrantFiled: May 23, 2000Date of Patent: April 2, 2002Assignee: Eastman Chemical CompanyInventors: James Allen Ponasik, Jr., Peter Borden Mackenzie, Christopher Moore Killian
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Patent number: 6359159Abstract: Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.Type: GrantFiled: December 4, 2000Date of Patent: March 19, 2002Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Paul J. Toscano, Rolf Claessen, Andrei Kornilov, Kulbinder Kumar Banger
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Publication number: 20020026064Abstract: The present invention concerns novel complexes, suitable in particular for use as catalysts in the asymmetric hydrogenation of ketones, of formula 1 1Type: ApplicationFiled: March 29, 2001Publication date: February 28, 2002Inventors: Mark Joseph Burk, William Hems, Antonio Zanotti-Gerosa
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Patent number: 6350737Abstract: A platinum complex of the general formula (I) wherein X represents a halogen atom and A represents a group —NH2—R wherein R is a tricyclic hydrocarbon moiety containing 10 to 14 carbon atoms which may be optionally substituted on the tricyclic ring by one or two alkyl group(s) containing 1 to 4 carbon atoms, and, furthermore, an inclusion complex of the above platinum complex with beta- or gamma-cyclodextrin which may be optionally substituted by a hydroxyalkyl group of 1 to 6 carbon atoms.Type: GrantFiled: November 16, 2000Date of Patent: February 26, 2002Assignee: Pliva-Lachema, A.S.Inventors: Frantisek Zak, Adolf Mistr, Anna Poulova, Milan Melka, Jaroslav Turanek, Dana Zaluska
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Patent number: 6350740Abstract: The invention provides a method for enhancing the water solubility of cytotoxic trans-platinum complexes. The present invention also provides a method for killing tumor cells, and a method for the treatment of tumors by the administration of a cytotoxic platinum coordination complex of the general formula SP4-2-[PtX(L)(L′)(B)]+.Type: GrantFiled: September 5, 2000Date of Patent: February 26, 2002Assignee: Virginia Commonwealth UniversityInventor: Nicholas Farrell
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Patent number: 6348611Abstract: The present invention relates to a process for carbonylation of epoxide derivatives, in which the reactivity, selectivity and the yield are superior. More specifically, the present invention relates to a process for hydroformylation of an epoxide derivative in which there is utilized a transition metal catalyst having a cyclopentadienyl radical, thereby improving the reactivity and selectivity. Further, the present invention relates to a process for hydroesterification of an epoxide derivative, in which a proper catalyst is selected, and the reaction temperature and pressure are adjusted within proper ranges under the presence of a cobalt catalyst, thereby improving the product selectivity and the yield.Type: GrantFiled: August 25, 1999Date of Patent: February 19, 2002Assignee: Samsung Electronic Co., Ktd.Inventors: Byeong-No Lee, Duck-Joo Yang, Young-Hun Byun
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Patent number: 6342621Abstract: Penta-coordinated ruthenium catalysts for the metathesis reactions of olefins, in particular ring opening metathesis polymerization (ROMP) of cyclo-olefin monomers, which are cationic complexes represented by formula I, II or III: wherein each of X1 and X2, which may be the same or different, is an optionally substituted C3-C20 hydrocarbon group having an allyl moiety as an end group bonded to the ruthenium atom, or X1 and X2 together form a group, optionally substituted, which results from dimerization of an alkene and has at each end an allyl group bonded to the ruthenium atom; L1 and L2 are mono-dentate neutral electron donor ligands, preferably highly sterically encumbered neutral electron donor ligands such as alkyl phosphines or amines; L{circumflex over ( )}L is a bidentate neutral electron donor ligand, preferably phosphine, amino, imino, arsine or arphos; L3 is a solvent molecule or a neutral mono-dentate electron donor ligand; L{circumflex over ( )}L{circumflex over ( )}L is a tridType: GrantFiled: January 27, 2000Date of Patent: January 29, 2002Assignee: Nippon Zeon Co., Ltd.Inventors: Shakti L. Mukerjee, Vernon L. Kyllingstad
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Publication number: 20020010352Abstract: The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl.Type: ApplicationFiled: March 12, 2001Publication date: January 24, 2002Applicant: REPSOL QUIMICA S.A.Inventors: Luis Mendez Llatas, Antonio Munoz-Escalona Lafuente, Juan Campora Perez, Ernesto Carmona Guzman, Manuel Lopez Reyes
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Patent number: 6340770Abstract: The present invention is related to a novel Pt(IV) complex represented by the following Chemical Formula 3 used as an anti-cancer agent and preparation method thereof. wherein, X is Cl2, and R1 and R2 are independently —OH, —Cl, —OCOCH3, —OCOCF3, —OCO(CH2)nCH3 or —OCO(CH2)nCF3 (n is an integer of 1 to 4).Type: GrantFiled: December 29, 1999Date of Patent: January 22, 2002Assignees: Sook Myung Women's University, STC Nara Co., Ltd.Inventors: Young-Ee Kwon, Kyu Ja Whang, Won Kyu Kim
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Patent number: 6340769Abstract: A method of forming an iridium-containing film on a substrate, from an iridium-containing precursor thereof which is decomposable to deposit iridium on the substrate, by decomposing the precursor and depositing iridium on the substrate in an oxidizing ambient environment which may for example contain an oxidizing gas such as oxygen, ozone, air, and nitrogen oxide. Useful precursors include Lewis base stabilized Ir(I) &bgr;-diketonates and Lewis base stabilized Ir(I) &bgr;-ketoiminates. The iridium deposited on the substrate may then be etched for patterning an electrode, followed by depositing on the electrode a dielectric or ferroelectric material, for fabrication of thin film capacitor semiconductor devices such as DRAMs, FRAMs, hybrid systems, smart cards and communication systems.Type: GrantFiled: December 3, 1999Date of Patent: January 22, 2002Assignee: Advanced Technology Materials, Inc.Inventors: Thomas H. Baum, Chongying Xu
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Patent number: 6340768Abstract: Volatile metal complexes with &agr;-sila-&bgr;-diketonate ligands containing haloalkyl, and particularly, perfluoroalkyl, substitutents are useful as metal precursors for chemical vapor deposition processes and as nanostructured materials containing fluorous domains.Type: GrantFiled: December 4, 2000Date of Patent: January 22, 2002Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Kulbinder Kumar Banger, Seiichiro Higashiya, Silvana C. Ngo
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Patent number: 6340560Abstract: An aminopolycarboxylic acid compound represented by the following formula or analogous thereof: The aminopolycarboxylic acid compound of the present invention can be used as a chelating agent for various metals, which is excellent in the biodegradability and masking effect on metals.Type: GrantFiled: October 7, 1998Date of Patent: January 22, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Inaba, Kiyoshi Morimoto, Shigeo Hirano
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Patent number: 6323353Abstract: The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1) The metal is rhodium, ruthenium, iridium or nickel.Type: GrantFiled: December 23, 1999Date of Patent: November 27, 2001Assignee: Takasago International CorporationInventors: Kenzo Sumi, Ryoji Noyori, Takao Ikariya
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Patent number: 6313333Abstract: The present invention relates to tetra- and penta-nuclear platinum complexes with antitumor activity, to a method for preparing them and to pharmaceutical compositions containing them.Type: GrantFiled: April 27, 2000Date of Patent: November 6, 2001Assignee: Setanta Therapeutics, Inc.Inventors: Giovanni Da Re, Roberto Di Domenico, Silvano Spinelli, Nicholas Farrell
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Patent number: 6310047Abstract: The invention provides an improved method for the delivery and stabilization of antisense oligodeoxynucleotides (ODNs) to cells. The unmodified ODNs are complexed to a polynuclear platinum compound or to a structural derivative thereof. Complexation neutralizes the charge of the ODN and makes possible its passage into the cell, without the addition of other transfection agents. The invention may be used in the treatment any disease which is amenable to treatment by antisense ODNs. In addition, the invention provides a new method specifically for the treatment of cancer.Type: GrantFiled: August 24, 1999Date of Patent: October 30, 2001Assignee: Virginia Commonwealth UniversityInventors: Nicholas Farrell, Miriam Kloster
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Patent number: 6306987Abstract: Disclosed is a compound of formula (I), and its use in preparing metathesis polymers of dicyclopentadiene and/or other strained cycloolefins in which Me is ruthenium or osmium; X1 and X2 independently of one another are anionic ligands, or X1 and X2 together are a bis-anionic ligand; Y is oxygen, sulfur or the groups —NR7— or —PR7—, where R7 is hydrogen or a substituent selected from the group C1-C6alkyl, C6-C13aralkyl, sulfonyl and —C(═O)Rs2 and Rs2 is hydrogen or a substituent selected from the group C1-C12alkyl, C2-C12alkenyl, C3-C12cycloalkyl, C3-C12cycloalkenyl, C2-C11heterocycloalkyl, C2-C11heterocycloalkenyl, C5-C12aryl, C1-C9heteroaryl, C6-C14aralkyl, C2-C13heteroaralkyl, C6-C14aralkenyl and C3-C13heteroaralkenyl; n is 0 or 1; L1 is tertiary phosphine; and L2 is a neutral e− donor ligand which is coordinated to the metal atom and is attached via the bridge group C* to the carbon atom of the carbene group if n is 0 and to Y if n is 1.Type: GrantFiled: December 16, 1999Date of Patent: October 23, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Paul Adriaan Van Der Schaaf, Andreas Hafner, Andreas Mühlebach
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Patent number: 6303720Abstract: Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst. The polymers are suitable for processing in conventional extrusion processes, and can be formed into high barrier sheets or films, or low molecular weight resins for use in synthetic waxes in wax coatings or as emulsions.Type: GrantFiled: May 12, 2000Date of Patent: October 16, 2001Assignee: Eastman Chemical CompanyInventors: Peter Borden Mackenzie, Leslie Shane Moody, Christopher Moore Killian, James Allen Ponasik, Jr., Jason Patrick McDevitt, Gino Georges Lavoie
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Patent number: 6303805Abstract: The metallocene complexes according to the present invention are prepared by reacting a transition metal complex of Group III-X of the Periodic Table, having at least one cycloalkanedienyl group, with a compound having at least two functional groups. The transition metal complex has a main ligand such as a cycloalkanedienyl group and at least one ancillary ligand which coordinated to a transition metal of Group III-X. The functional groups in the compound having at least two functional group are selected from the group consisting of a hydroxyl group (—OH), a thiol group (—SH), a primary amine group (—NH2), a secondary amine group (RNH—), a tertiary amine group (RR′N) a primary phosphorous group (—PH2), a secondary phosphorous group (RPH—), a tertiary phosphorous group (RR′P), a thiirane group etc.Type: GrantFiled: September 9, 1999Date of Patent: October 16, 2001Assignee: Samsung General Chemical Co., Ltd.Inventors: Yi-Yeol Lyu, Duck-Joo Yang, Keun-Byoung Yoon, Seok Chang, Won-Cheol Jung
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Patent number: 6300509Abstract: Amino-amide ruthenium complexes of the general formula RuH(L′{—H})(Y) and RuX(L′{—H})(Y) wherein X signifies chlorine, bromine or iodine, Y signifies a neutral ligand, L′ signifies a monosulphonylated diamine of the general formula R1SO2—HN—CH2—(CH2)n—CH2—NHR4 II′ R1 signifies optionally mono- or multiply fluorinated alkyl, alkenyl, alkynyl, cycloalkyl, optionally mono- or multiply-substituted aryl, heteroaryl or camphor-10-yl, R4 signifies hydrogen or alkyl, and n signifies 0, 1, 2 or 3. is described.Type: GrantFiled: November 3, 2000Date of Patent: October 9, 2001Assignee: Roche Vitamins Inc.Inventors: Yvo Crameri, Kurt Püntener, Michelangelo Scalone
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Patent number: 6288229Abstract: A ruthenium (II) complex having a dipyridophenazine or tetrapyridophenazine ligand and being represented by the formula (1) or (2) shown in the specification. Upon absorption of light, the complex emits fluorescence for a longer life time in a protic solvent as compared with known analogous compounds.Type: GrantFiled: March 27, 2000Date of Patent: September 11, 2001Assignee: Secretary of Agency of Industrial Science and TechnologyInventors: Nobuko Komatsuzaki, Ryuzi Katoh, Yuichiro Himeda, Hideki Sugihara, Hironori Arakawa, Kazuyuki Kasuga
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Patent number: 6278056Abstract: A metal complex represented by the formula: (X)nML1L2, (X)2M(L1)2 or (L1)2ML2 wherein M represents a Group VIII metal, X represents a polar group, L1 represents a phenanthroline containing at least one carboxyl group which may be neutralized, L2 represents a nitrogen-containing polycyclic compound which may contain one or more substituents, and n is an integer of 1 or 2. A dye-sensitized oxide semiconductor electrode includes an electrically conductive body, an oxide semiconductor film provided on a surface of the electrically conductive body, and the above metal complex. A solar cell may be constructed from the above dye-sensitized oxide semiconductor electrode, a counter electrode, and a redox electrolyte contacting with both electrodes.Type: GrantFiled: March 18, 1999Date of Patent: August 21, 2001Assignee: Director-General of Agency of Industrial Science and TechnologyInventors: Hideki Sugihara, Hironori Arakawa, Kazuhiro Sayama, Lok Pratap Singh, Mohammad Khaja Nazeeruddin, Michael Graetzel
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Publication number: 20010014646Abstract: Provided are certain transition metal complexes which are useful as catalysts in the polymerization of olefinic monomers. In particular, the invention provides complexes of certain bidentate ligands bonded to Ni, Pd, Co, or Fe, and optionally, one or more neutral Lewis acids, and their use in the polymerization of olefins.Type: ApplicationFiled: March 2, 2001Publication date: August 16, 2001Inventors: Peter Borden Mackenzie, Christopher Moore Killian, Leslie Shane Moody, Jason Patrick McDevitt
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Patent number: 6274806Abstract: A platinum complex represented by the formula PtL1/L2 or PtLX1/LX2 wherein L1 and L each represent a ligand selected from the group consisting of 2,2′-bipyridine compounds having at least one anionic group and 1,10-phenanthroline compounds having at least one anionic group, L2 represents a dithiolate selected from those represented by the formulas (a) through (d) shown in the specification, and X1 and X2 each represent a thiolate selected from those represented by the following formulas (e) and (f) shown in the specification. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed on the conductive surface, and the above platinum complex supported on the film. A solar cell includes the above electrode, a counter electrode, and an electrolyte disposed therebetween.Type: GrantFiled: March 27, 2000Date of Patent: August 14, 2001Assignee: Agency of Industrial Science and TechnologyInventors: Hideki Sugihara, Kohjiro Hara, Kazuhiro Sayama, Hironori Arakawa, Ashraful Islam, Lok Pratap Singh
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Patent number: 6245988Abstract: A photosensitizer complex of formulae (Ia) MX3Lt or (Ib) MXYLt in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium, preferably ruthenium or osmium; each X is a co-ligand independently selected from NCS—, Cl—, Br—, I—, CN—, NCO—, H2O, NCN2−; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and C1-30 alkyl, preferably NCS—; and Lt is a tridentate ligand comprising heterocycles such as pyridine, thiophene, imidazole, pyrazole, triazole, carrying at least one carboxylic, phosphoric, hydoxamic acid or a chelating group. A photovoltaic cell comprising an electrically conductive layer deposited on a support to which at least one titanium dioxide layer has been applied and, as a photosensitizer applied to the titanium dioxide layer, a photosensitizer complex of formula (Ia) or Ib) as specified above.Type: GrantFiled: November 2, 1999Date of Patent: June 12, 2001Assignee: Ecole Polytechnique Federale de LausanneInventors: Michael Grätzel, Mohammad Khaja Nazeeruddin, Péter Péchy
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Patent number: 6239301Abstract: A method for the removal of heavy metals from solutions of organic compounds by treatment with cysteine or with an N-acylcysteine is described. Organic compounds with a content of heavy metal, for example palladium, particularly low and suitable for the preparation of compounds with pharmacologic activity can be isolated from the resultant solutions.Type: GrantFiled: December 30, 1999Date of Patent: May 29, 2001Assignee: Zambon Group S.p.A.Inventors: Marco Villa, Vincenzo Cannata, Alessandro Rosi, Pietro Allegrini
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Patent number: 6232482Abstract: Ruthenium complexes of the formula I or IV RuX2(═CH—CH2R)L1L2 (I) RuXY(═CH═CH2R)L1L2 (IV) where X, Y are anionic ligands, R is hydrogen or a substituted or unsubstituted C1-C20-alkyl radical or C6-C20-aryl radical and L1 and L2 are, independently of one another, uncharged electron donor ligands, are prepared by (a) reaction of RuX3 with L1 and L2 in an inert solvent in the presence of a reducing agent and hydrogen and (b) reaction with compounds of the formula II R—C≡CH (II) where R is as defined above, in the presence or absence of water, and, if desired after isolation of the intermediate, with HY, [HL1]Y or [HL2]Y.Type: GrantFiled: May 8, 2000Date of Patent: May 15, 2001Assignee: BASF AktiengesellschaftInventors: Peter Schwab, Michael Schulz, Justin Wolf, Wolfram Stuer, Helmut Werner
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Patent number: 6225488Abstract: Penta-coordinated ruthenium or osmium catalysts for metathesis reactions of olefins, which are cationic complexes represented by formulas I, II or III: wherein M is ruthenium or osmium; each of X1 and X2, which may be the same or different, is an optionally substituted C3-C20 hydrocarbon group having an allyl moiety as an end group bonded to the central metal atom M, or X1 and X2 together form a group, optionally substituted, which results from dimerization of an alkene and has at each end an allyl moiety bonded to the central metal atom M, L1 is a neutral electron donor ligand; L2 is a carbene group; L3 is a neutral electron donor ligand which may be the same as or different from L1, or L3 is a halide group; L11 is a neutral electron donor ligand; L12 is a solvent molecule capable of coordination to the central metal atom M; L13 is an alkyl group; L14 is an alkyl, a carbene, a solvent molecule capable of coordination to the central metal atom M, or a halide; L{circumflex over ( )}L is a bidType: GrantFiled: April 2, 1999Date of Patent: May 1, 2001Assignee: Nippon Zeon Co., Ltd.Inventors: Shakti L. Mukerjee, Vernon L. Kyllingstad
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Patent number: 6225508Abstract: According to the invention, branched and straight chain alkenes and cycloalkenes with five and more C-atoms are by means of hydroformylation using a novel rhodium-tri-polyethylene glycolate of a polyethylene glycol with an average molecular weight of 320 to 650 as a catalyst with at hydrogen/carbon monoxide pressure of 60 to 200 bar and at a temperature of between 50 and 150° C. converted into branched and straight chain alkanals and cycloalkanals with six and more C-atoms. The reaction is preferably carried out in water or polyethylene glycol or a mixture of the same as a solvent in the heterogeneous phase. The aldehydes obtained are easy to separate from the catalyst in the reaction preparation. Said aldehydes are also obtained with a high level of purity and a high yield.Type: GrantFiled: February 15, 2000Date of Patent: May 1, 2001Assignee: Hoechst Research & Technology Deutschland GmbH & Co. KGInventors: Sandra Bogdanovic, Herbert Roesky, Uwe Ritter, Thomas Borrmann
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Patent number: 6221906Abstract: The present invention relates to a platinum complex conjugated to a cyclotriphosphazene represented by Formula 1 and a preparation method thereof. The platinum complex according to the present invention can be used as an anticancer agent.Type: GrantFiled: March 2, 2000Date of Patent: April 24, 2001Assignee: Korea Institute of Science and TechnologyInventors: Youn Soo Sohn, Hyoung Gee Baek, Chong Ock Lee
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Patent number: 6187961Abstract: A process for the manufacture of trans-(R,R)-actinol by diasteroselective transfer hydrogenation of levodione comprises hydrogenating (R)-levodione in the presence of a hydrogen donor, which simultaneously can be used as the solvent, and an amino-amide-ruthenium complex, especially of the formula RuH(L{—H})(Y), wherein Y signifies a neutral ligand and L signifies an optionally optically active monosulphonylated diamine ligand, as defined in more detail in the description. Moreover, the invention is concerned with some of the amino-amide-ruthenium complexes and with the corresponding precursors to these complexes, which have halogen in place of H. The product of the process in accordance with the invention, trans-(R,R)-actinol, is known as an important building block for the synthesis of carotenoids, e.g. zeaxanthin. By the process trans-(R,R)-actinol is made available in particularly high enantiomeric and diasteromeric purity.Type: GrantFiled: October 20, 1998Date of Patent: February 13, 2001Assignee: Roche Vitamins Inc.Inventors: Yvo Crameri, Kurt Püntener, Michelangelo Scalone
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Patent number: 6187910Abstract: The present invention provides for substituted metal chelating compounds in which at least two of the chelating atoms are nitrogen which are directly attached to aromatic rings and one or more of those nitrogen atoms has attached thereto a substituent other than hydrogen, and methods for making and using these compounds.Type: GrantFiled: May 12, 1999Date of Patent: February 13, 2001Assignee: NeoRx CorporationInventor: Sudhakar Kasina
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Patent number: 6184403Abstract: Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.Type: GrantFiled: May 19, 1999Date of Patent: February 6, 2001Assignee: Research Foundation of State University of New YorkInventors: John T. Welch, Paul J. Toscano, Rolf Claessen, Andrei Kornilov, Kulbinder Kumar Banger
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Patent number: 6153646Abstract: A family of platinum complexes which are stable and exhibit anticancer activity.Type: GrantFiled: December 9, 1998Date of Patent: November 28, 2000Assignee: Yoshinori KidaniInventors: Yoshinori Kidani, Rolland-Yves Mauvernay, Teruko Irie
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Patent number: 6153780Abstract: Process for the preparation of octa-2,7-dienyl-1-amine by telomerization of butadiene with ammonia in a two-phase system in the presence of hydrophilic palladium complexes, characterized in that octa-2,7-dienyl-1-amine and octa-1,7-dienyl-3-amine are isolated separately from one another from the reaction mixture present after telomerization, and the octa-1,7-dienyl-3-amine isolated in this way is subjected to an isomerization reaction to form octa-2,7-dienyl-1-amine, and also novel triphenylphosphine mono- and dimethoxytri(sodium sulphonates) and the use of triphenylphosphine trimethoxytri(sodium sulphonates), triphenylphosphine trimethyltri(sodium sulphonates) and triphenylphosphine trifluorodi- and tri(sodium sulphonates) as ligands for the preparation of palladium complexes.Type: GrantFiled: February 24, 2000Date of Patent: November 28, 2000Assignee: Bayer AktiengesellschaftInventors: Hans-Joachim Traenckner, Jorg-Dietrich Jentsch, Thomas Prinz, Birgit Driessen-Holscher, Wilhelm Keim