Hetero Nitrogen Containing Patents (Class 204/157.71)
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Patent number: 11254642Abstract: The present invention provides a method for the preparing of 2-chloro-5-trifluoromethylpyridine, comprising two steps of chlorofluorination reaction and chlorination reaction, the chlorination catalyst used in the chlorination reaction was chosen from a fluoride, an oxide, a hydroxide, a carbonate, or a chloride of magnesium, calcium and barium and a supported palladium catalyst; or under the action of at least one catalyst chosen from ZSM-5, 5A, ? and 13× molecular sieves, 3-trifluoromethylpyridine and chlorine gas phase have reaction to obtain 2-chloro-5-trifluoromethylpyridine. Or, under the action of a catalyst chosen from a fluoride, an oxide, a hydroxide, a carbonate, or a chloride of magnesium, calcium, and barium and a supported palladium catalyst, 3-trifluoromethylpyridine and chlorine gas phase have reaction to obtain 2-chloro-5-trifluoromethylpyridine.Type: GrantFiled: December 5, 2018Date of Patent: February 22, 2022Assignees: ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI-TECH CO., LTD., ZHEJIANG RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD., SINOCHEM LANTIAN CO., LTD.Inventors: Wanjin Yu, Shengda Lin, Minyang Liu, Wucan Liu, Jianjun Zhang, Xianjin Chen
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Patent number: 10208029Abstract: A photoacid includes a nucleophilic (NuH) moiety having a photodissociable proton, an electron accepting (EA) moiety, and a bridge structure (X) bonded to both the NuH moiety and EA moiety positioned between the NuH and EA moieties. The NuH and EA moieties each include respective structure so that the EA moiety bonds to a proton photodissociated form of the NuH moiety during a reversible photoinduced intramolecular reaction to form a ring, which has been found to significantly increase the lifetime of the proton dissociation state.Type: GrantFiled: March 1, 2016Date of Patent: February 19, 2019Assignee: University of Central Florida Research Foundation, Inc.Inventor: Yi Liao
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Publication number: 20150053545Abstract: A device and method are provided for manipulating petroleum, non-conventional oil and other viscous complex fluids made of hydrocarbons that comprise enforcement of fluid in a multi-stage flow-through hydrodynamic cavitational reactor, subjecting said fluids to a controlled cavitation and continuing the application of such cavitation for a period of time sufficient for obtaining desired changes in physical properties and/or chemical composition and generating the upgraded products. The method includes alteration of chemical bonds, induction of interactions of components, changes in composition, heterogeneity and rheological characteristics in order to facilitate handling, improve yields of distillate fuels and optimize other properties.Type: ApplicationFiled: November 3, 2014Publication date: February 26, 2015Inventors: Roman Gordon, Igor Gorodnitsky, Maxim A. Promtov
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Publication number: 20150032045Abstract: The present invention describes Photolabile Compounds methods for use of the compounds. The Photolabile Compounds have a photoreleasable ligand, which can be biologically active, and which is photoreleased from the compound upon exposure to light. In some embodiments, the Photolabile Compounds comprise a light antenna, such as a labeling molecule or an active derivative thereof. In one embodiment, the light is visible light, which is not detrimental to the viability of biological samples, such as cells and tissues, in which the released organic molecule is bioactive and can have a therapeutic effect. In another embodiment, the photoreleasable ligand can be a labeling molecule, such as a fluorescent molecule.Type: ApplicationFiled: December 21, 2012Publication date: January 29, 2015Inventors: Rafael Yuste, Roberto Etchenique, Luis Baraldo
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Publication number: 20140302099Abstract: The present invention relates to an ophthalmic composition containing cyclosporine as an active ingredient and comprising propylene glycol, a surfactant, and purified water, and to a method for preparing same. The ophthalmic composition according to the present invention is in the form of a clear and transparent solution, and increases patient compliance due to the absence of side effects, such as cloudy vision or a scorching sensation, and has a high bioavailability due to improved cyclosporine absorbance in the ocular tissue, which is the target organ.Type: ApplicationFiled: October 9, 2012Publication date: October 9, 2014Inventor: Yong Nam KIM
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Publication number: 20140246303Abstract: The invention relates to a method for preparing lactames, according to which a photonitrosation of a cycloalkane is carried out using nitrosyl chloride (NOCI). According to the invention, said photonitrosation is carried out by means of LEDs emitting a monochromatic light. The method according to the invention can also include a step comprising Beckmann transposition/dechlorination of the oxime hydrochloride generated during said phonitrosation, preferably carried out in a glass microreactor.Type: ApplicationFiled: April 14, 2014Publication date: September 4, 2014Applicant: ARKEMA FRANCEInventor: Thierry AUBERT
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Publication number: 20140061026Abstract: The invention provides a process for producing finely divided particles of core-shell structure where the shell comprises at least one polymer, said process comprising the steps of: i. providing a first aerosol stream of droplets in a carrier gas stream wherein the droplets comprise at least one monomer and charging droplets of the first aerosol with electric charge; ii. providing a second aerosol stream of solid particles in a carrier gas stream and charging the solid particles of the aerosol with an electric charge opposite to the electric charge on the droplets of the first aerosol stream; iii. mixing the first aerosol stream with the second aerosol stream to form a mixed aerosol stream; iv. initiating a polymerization of the monomers by irradiating this mixed aerosol stream with electromagnetic radiation. The invention also provides the finely divided particles of core-shell structure which are obtainable by this process.Type: ApplicationFiled: August 29, 2013Publication date: March 6, 2014Applicants: Karlsruher Institut fuer Technologie (KIT), BASF SEInventors: Wolfgang Gerlinger, Bernd Sachweh, Michael Woerner, Ertan Akguen, Stephanie Sigmund, Gerhard Kasper
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Patent number: 8541625Abstract: Cyclic alkynes (e.g., cyclooctynes such as dibenzocyclooctynes) can be photochemically generated from cyclopropenones as disclosed herein. The cyclic alkynes can be reacted (e.g., in situ) with materials having alkyne-reactive groups (e.g., azide groups in a “click” reaction). In preferred embodiments, the generation and reaction of the cyclic alkyne can proceed in the absence of a catalyst (e.g., Cu(I)). These reactions can be useful, for example, for the selective labeling of living cells that are metabolically modified with azido-containing surface monosaccharides, or for light-directed surface patterning.Type: GrantFiled: August 6, 2012Date of Patent: September 24, 2013Assignee: University of Georgia Research Foundation, Inc.Inventors: Vladimir V. Popik, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
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Publication number: 20130192978Abstract: A photoacid includes a nucleophilic (NuH) moiety having a photodissociable proton, an electron accepting (EA) moiety, and a bridge structure (X) bonded to both the NuH moiety and EA moiety positioned between the NuH and EA moieties. The NuH and EA moieties each include respective structure so that the EA moiety bonds to a proton photodissociated form of the NuH moiety during a reversible photoinduced intramolecular reaction to form a ring, which has been found to significantly increase the lifetime of the proton dissociation state.Type: ApplicationFiled: January 23, 2013Publication date: August 1, 2013Applicant: University of Central Florida Research Foundation, Inc.Inventor: University of Central Florida Research Foundation, Inc.
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Publication number: 20130164803Abstract: Cyclic alkynes (e.g., cyclooctynes such as dibenzocyclooctynes) can be photochemically generated from cyclopropenones as disclosed herein. The cyclic alkynes can be reacted (e.g., in situ) with materials having alkyne-reactive groups (e.g., azide groups in a “click” reaction). In preferred embodiments, the generation and reaction of the cyclic alkyne can proceed in the absence of a catalyst (e.g., Cu(I)). These reactions can be useful, for example, for the selective labeling of living cells that are metabolically modified with azido-containing surface monosaccharides, or for light-directed surface patterning.Type: ApplicationFiled: August 6, 2012Publication date: June 27, 2013Applicant: University of George Research Foundation, Inc.Inventors: VLADIMIR V. POPIK, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
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Publication number: 20130131350Abstract: The present invention relates to Pyridin-2-yl sulfanyl acid ester compounds having antiinflammatory properties. The present invention particularly relates to novel anti-inflammatory heterocyclic acid esters of Pyridin-2-yl sulfanyl having the structure of general formula 1 which have been screened for their antiinflammatory activity with respect to inhibition of adhesion of neutrophils, isolated from human peripheral blood, onto the surface of human umbilical vein endothelial cells (HU-VEC) as a result of inhibition of the cytokine-stimulated expression of cell adhesion molecule ICAM-1. The compound RS—Z, 3-(Pyridin-2-yl sulfanyl)-propionic acid pentyl ester (structure 1a, R1=H, R2=H, R3=CH2-COOC5H11) was found to be most effective for ICAM-1 and neutrophil adhesion inhibition and was found to effectively alleviate inflammation mediated by excessive leukocyte infiltration leading to inflammatory disorders or like conditions, such as acute lung injury and acute respiratory distress syndrome in mice.Type: ApplicationFiled: July 20, 2011Publication date: May 23, 2013Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Jadab Chandra Sarma, Dilip Chandra Bora, Paruchuri Gangadhar Rao, Balaram Ghosh, Sakshi Balwani
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Publication number: 20130118955Abstract: The present invention relates to an improved desulfurization process using an ionic liquid compound of general formula C+A?, where C+ represents an organic cation such as alkyl-pyridinium, di-alkyl imidazolium and tri-alkyl imidazolium; and A? is an anion of halides of iron (III), such as, for example, FeCl4?. The desulfurization process is also improved when producing the ionic liquid compound by heating the reactants using microwave energy. The ionic liquids can be used to desulfurize hydrocarbon mixtures by a liquid-liquid extraction.Type: ApplicationFiled: January 3, 2013Publication date: May 16, 2013Applicant: INSTITUTO MEXICANO DEL PETROLEOInventor: Instituto Mexicano del Petroleo
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Publication number: 20130109858Abstract: A core-expanded perylene diimide compound having general formula A useful as a fluorescent dye is synthesized:Type: ApplicationFiled: July 16, 2010Publication date: May 2, 2013Applicant: NITTO DENKO CORPORATIONInventor: Nobukazu Negishi
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Patent number: 8404088Abstract: The present invention provides a new strategies for the synthesis of compounds of the rocaglamide family and related natural products. The synthetic approach generally involves photochemical generation of an oxidopyrylium species from a 3-hydroxychromone derivative followed by an enantioselective 1,3-dipolar cycloaddition of the oxidopyrylium species to a dipolarophile in the presence of a TADDOL derivative. This approach can be used for the formation of adducts containing an aglain core structure. Methods of the conversion of aglain core structures to aglain, rocaglamide and forbaglin ring systems are also provided. The present invention also relates to the use of rocaglamide/aglain/forbaglin derivatives for the manufacture of medicaments for use in the treatment of cancer or cancerous conditions, disorders associated with cellular hyperproliferation, or NF-?B-dependent conditions.Type: GrantFiled: March 19, 2012Date of Patent: March 26, 2013Assignee: Trustees of Boston UniversityInventors: John A. Porco, Jr., Baudouin Gerard
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Publication number: 20120295318Abstract: Cyclic alkynes (e.g., cyclooctynes such as dibenzocyclooctynes) can be photochemically generated from cyclopropenones as disclosed herein. The cyclic alkynes can be reacted (e.g., in situ) with materials having alkyne-reactive groups (e.g., azide groups in a “click” reaction). In preferred embodiments, the generation and reaction of the cyclic alkyne can proceed in the absence of a catalyst (e.g., Cu(I)). These reactions can be useful, for example, for the selective labeling of living cells that are metabolically modified with azido-containing surface monosaccharides, or for light-directed surface patterning.Type: ApplicationFiled: August 6, 2012Publication date: November 22, 2012Applicant: University of George Research Foundation, Inc.Inventors: VLADIMIR V. POPIK, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
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Patent number: 8287700Abstract: The present invention describes extremely rapid and efficient methods for the attachment of chemical moieties to matrices by the use of microwave technology. The methods of the invention can be applied in a variety of ways for the preparation of different types of matrices for a variety of applications including but not limited to the functionalization of various solid supports, and matrices in the form of powder, beads, sheets, and other suitable surfaces for use in applications including but not limited to oligonucleotide synthesis, peptide synthesis, environmental clean up (removal of toxic materials), immunoassays, affinity chromatography, combinatorial chemistry, microarrays, proteomics and medical diagnostics.Type: GrantFiled: December 17, 2009Date of Patent: October 16, 2012Assignee: Spring BankInventors: Seetharamaiyer Padmanabhan, Radhakrishnan P. Iyer
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Publication number: 20120181163Abstract: A method of transferring electrons with a light energy conversion material is described. The material includes a silica porous material having silicon atoms chemically bonded with an organic group that is an electron donor in a skeleton thereof, and an electron acceptor disposed in at least one portion among a pore, the skeleton and the outer circumference of the porous material. The method includes absorbing light energy by the organic group and transferring electrons excited by the light energy to the electron acceptor.Type: ApplicationFiled: February 3, 2012Publication date: July 19, 2012Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Shinji INAGAKI, Masao AOKI, Ken-ichi YAMANAKA, Kiyotaka NAKAJIMA, Masataka OHASHI
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Publication number: 20120135249Abstract: Aromatic and aromatic/heteroaromatic molecular structures with controllable electron conducting properties are derived from the incorporation of electron active substituents in selective positions.Type: ApplicationFiled: February 8, 2012Publication date: May 31, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: ROGER HARQUAIL FRENCH, ROSS GETTY, SIMONA PERCEC
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Patent number: 8137509Abstract: The present invention provides a new strategies for the synthesis of compounds of the rocaglamide family and related natural products. The synthetic approach generally involves photochemical generation of an oxidopyrylium species from a 3-hydroxychromone derivative followed by an enantioselective 1,3-dipolar cycloaddition of the oxidopyrylium species to a dipolarophile in the presence of a TADDOL derivative. This approach can be used for the formation of adducts containing an aglain core structure. Methods of the conversion of aglain core structures to aglain, rocaglamide and forbaglin ring systems are also provided. The present invention also relates to the use of rocaglamide/aglain/forbaglin derivatives for the manufacture of medicaments for use in the treatment of cancer or cancerous conditions, disorders associated with cellular hyperproliferation, or NF-?B-dependent conditions.Type: GrantFiled: May 21, 2007Date of Patent: March 20, 2012Assignee: Trustees of Boston UniversityInventors: John A. Porco, Jr., Baudouin Gerard
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Patent number: 8133940Abstract: Methods for generating metallic particles in situ in a polymer are disclosed. A method includes (a) contacting the polymer with a solution comprising (i) a solvent, (ii) a metal salt, and (iii) a free radical generator; (b) removing the polymer from the solution; and (c) exposing the polymer to actinic radiation. Polymer composites and polymer nanocomposites comprising inorganic particulates comprising metallic particles generated in the polymer are also disclosed.Type: GrantFiled: July 31, 2009Date of Patent: March 13, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Michael A. Zalich, Simion Coca, Gregory J. McCollum
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Publication number: 20110311505Abstract: This invention is related to preparation of photosensitive ruthenium based aminoacid monomers and oligomers, aminoacid monomer-protein cross-linking using photo sensitat ion and conjugation on micro and nano-structures by ruthenium-chelate based monomers. Its vast range biotechnolgy applications of multifunctional, biocompatible, stabilE and specific micro and nanobio-conjugates, which will stand-alone or simultaneously enable (i) both purification and determination, (ii) both targeting and imaging and theranostics and (iii) catalysis and determination. The construction and method of preparation is applicable to silica materials, superparamagnetic particles, QDs, CNTs, Ag/Au nanoparticles and Au surfaces and polymeric materials. The photosensitive aminoacid monomer linkers can react via chemically and biocompatible to a lot of different micro and nano-surface and then to the protein when they act as a single-step cross-linking reaction using irradiation.Type: ApplicationFiled: December 11, 2009Publication date: December 22, 2011Inventors: Arzu Ersoz, Deniz Hur, Filiz Yilmaz, Adil Denizli, Ayca Atilir Ozcan, Sibel Emir Diltemiz, Suzan Yazar, Ozlem Bicen, Sibel Buyuktiryaki, Rustem Kecili, Guner Saka, Tugba Findik
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Publication number: 20110245503Abstract: Described herein is a new asymmetric synthesis of imines to obtain ?-carboline derivatives useful as key intermediate compounds for the synthesis of phosphodiesterase inhibitors using a new process with palladium or ruthenium hydride and/or nickel boride to reduce chiral intermediates. The use of chloroformate chiral auxiliaries is further described for the reduction and asymmetric hydrogenation of imines to obtain ?-carboline derivatives and intermediate compounds used in the preparation thereof.Type: ApplicationFiled: November 27, 2009Publication date: October 6, 2011Applicant: UNIVERSIDAD DE TALCAInventors: Leonardo Santos, Marlene Espinoza Moraga, Nagula Shankarajah
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Publication number: 20110195028Abstract: The presently disclosed subject matter demonstrates that a spin state which has zero magnetic resonance signal, but an extremely long lifetime, can be used to store magnetization, which can then be recovered into an observable transition. Coupled with hyper-polarization techniques, this permits the preparation of a wide range of contrast agent molecules for use in magnetic resonance imaging (MRI) techniques that have long effective relaxation time.Type: ApplicationFiled: July 31, 2009Publication date: August 11, 2011Inventor: Warren S. Warren
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Publication number: 20110105760Abstract: The present invention relates to a process for preparing substituted 2-aminobiphenyls and to a process for preparing (Het)arylamides of such 2-aminobiphenyls.Type: ApplicationFiled: July 3, 2009Publication date: May 5, 2011Applicant: BASF SEInventors: Michael Keil, Michael Rack, Thomas Zierke, Markus Heinrich, Alexander Wetzel
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Publication number: 20110004003Abstract: A novel high-performance material is provided. A certain aspect of the present invention lies in a 2,3-bis(N,N-bis(p-anisyl)4-aminophenylethynyl)dimethylfumarate producing method, characterized by illuminating light onto 2,3-bis(N,N-bis(p-anisyl)4-aminophenylethynyl)dimethylmaleate. Also, a further certain aspect of the present invention lies in a 2,3-bis(N,N-bis(p-anisyl)4-aminophenylethynyl)dimethylmaleate producing method, characterized by illuminating light onto 2,3-bis(N,N-bis(p-anisyl)4-aminophenylethynyl)dimethylfumarate. According to this constitution, there can be obtained a high-performance material by a simple technique.Type: ApplicationFiled: August 1, 2008Publication date: January 6, 2011Applicant: The University of TokyoInventors: Hiroshi Nishihara, Ryota Sakamoto
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Publication number: 20100326813Abstract: The invention is directed to a method of forming, producing or manufacturing functionalized nanomaterials, and, specifically, soluble functionalized nanomaterials. The presently described invention also relates to nanomaterial-based composites consisting of a target material, which can include ceramic, polymer, or metallic matrices incorporated into or grown on nanomaterials, as well as a method or synthesis technique for the formation, production, or manufacture of nanomaterial-based composites through microwave-induced reaction.Type: ApplicationFiled: July 2, 2010Publication date: December 30, 2010Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGYInventors: Somenath Mitra, Zafar Iqbal
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Publication number: 20100160632Abstract: The present invention relates to zinc amide bases of the general formula (I) (R1R2N)2—Zn.aMgX12.bLiX2??(I) wherein R1 and R2 are each independently selected from substituted or unsubstituted, linear or branched alkyl, alkenyl, alkynyl or silyl derivatives thereof, and substituted or unsubstituted aryl or heteroaryl, and wherein R1 and R2 can form together a ring structure, or R1 and/or R2 can be part of a polymer structure; X12 is a divalent anion or two monovalent anions that are independent from each other; X2 is a monovalent anion; a is >0; and b is >0. The zinc amide bases can be used, amongst other things, for deprotonation and metallization of aromatics.Type: ApplicationFiled: May 14, 2008Publication date: June 24, 2010Inventors: Paul Knochel, Stefan Wunderlich
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Publication number: 20100096251Abstract: The present invention describes extremely rapid and efficient methods for the attachment of chemical moieties to matrices by the use of microwave technology. The methods of the invention can be applied in a variety of ways for the preparation of different types of matrices for a variety of applications including but not limited to the functionalization of various solid supports, and matrices in the form of powder, beads, sheets, and other suitable surfaces for use in applications including but not limited to oligonucleotide synthesis, peptide synthesis, environmental clean up (removal of toxic materials), immunoassays, affinity chromatography, combinatorial chemistry, microarrays, proteomics and medical diagnostics.Type: ApplicationFiled: December 17, 2009Publication date: April 22, 2010Inventors: Seetharamaiyer Padmanabhan, Radhakrishnan P. Iyer
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Publication number: 20090264494Abstract: The present invention include providing a therapeutically effective amount of a 3-substituted indolin-2-one compositions to protect against neurodegeneration including diseases such as Alzheimer's disease, Parkinson's disease, or Huntington's disease, and conditions such as ischemic strokeType: ApplicationFiled: May 13, 2009Publication date: October 22, 2009Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, SOUTHERN METHODIST UNIVERSITYInventors: Santosh R. D'Mello, Edward Biehl
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Patent number: 7524966Abstract: Ditopic molecules in the form of linear reaction templates have been used to construct ladder-like hydrocarbons known as [n]-ladderanes (n=3,5). The templates assemble and position reactant molecules in the solid state by way of hydrogen bonds for [2+2] photodimerization. The products, which are based on recently identified naturally occurring frameworks, form stereospecifically, in gram quantities, and in quantitative yield. The control of reactivity achieved using linear templates provides a basis for the development of molecular tools, termed assemblers, that could be used to manufacture, with atomic-level precision, a wide range of products (e.g. molecular nanostructures) with unique properties.Type: GrantFiled: October 8, 2003Date of Patent: April 28, 2009Assignee: University of Iowa Research FoundationInventor: Leonard R. MacGillivray
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Publication number: 20040026230Abstract: The invention describes a method for effecting intramolecular cyclization reactions using light, in the absence of radical initiators, to provide useful polycyclic compounds.Type: ApplicationFiled: April 23, 2003Publication date: February 12, 2004Inventors: Roman Davis, Thomas Claiborne Lovelace
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Publication number: 20030230478Abstract: The present invention provides a process for the preparation of 1,4-dihydropyridines of the formula 1 1Type: ApplicationFiled: March 20, 2003Publication date: December 18, 2003Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Neeraj Mahendroo, Ravi Kumar Khajuria, Kasturi Lal Bedi, Kanaya Lal Dhar, Vijay Kumar Kapoor
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Patent number: 6551467Abstract: The present invention is draw to microwave heating of a transition metal-catalysed organic reaction, in which a catalyst complex between a transition metal and an auxiliary ligand or ligands, the ligand being asymmetric or symmetric, monodentate or bidentate, results in highly chemoselective, regioselective, and stereoselective allylic substitution reactions. Molybdenum or palladium complexes form suitable catalytic systems with a plethora of ligands in a variety of solvents for such microwave facilitated nucleophilic substitution reactions.Type: GrantFiled: April 16, 2001Date of Patent: April 22, 2003Assignee: Personal Chemistry i Uppsala ABInventors: Ulf Bremberg, Anders Hallberg, Mats Larhed, Christina Moberg, Nils-Fredrik Kaiser
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Patent number: 6491796Abstract: This invention provides a novel process for preparing soluble phthalocyanines by microwave irradiation in the absence of any organic solvent. Three different starting materials, i.e. t-butylphthalic anhydride, t-butyl phthalonitrile and metal-free H2Pc (tetra-t-butylphthalocyanine) have been adopted, respectively. The starting material with proper metal compound, such as chloride or acetate were irradiated in a commercial microwave oven for a period of 1 to 30 minutes at a power of 200˜900 W. This process is noted to reduce drastically reaction time of MPc formation from 8˜24 hours to 10˜30 minutes due to its unique heating by microwave irradiation. Sandwiched type MPc2 (such as Lu Pc2) can be produced only through metal replacement from metal-free phthalocyanine by microwave irradiation.Type: GrantFiled: June 26, 2001Date of Patent: December 10, 2002Assignees: Agi Corporation, National Tsing Hua UniversityInventors: Andrew Teh Hu, Tsai-Wie Tseng, Herng-Dar Hwu, Lung-chang Liu, Chung-Chun Lee, Ming-Chia Lee, Jun-Rong Chen
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Patent number: 6348630Abstract: The level of an unsaturated cyclic imine (I) of the formula (I) where R1 is alkenyl having 3, 4, 5, 6, 7, 8, 9, 10, 11 carbon atoms belonging to the ring system, in a mixture comprising hexamethylenediamine and an imine (I) is reduced by electrochemical conversion of an imine (I) in a mixture comprising hexamethylenediamine and an imine (I) in the presence of solvated protons into a saturated cyclic amine of the formula (II)Type: GrantFiled: January 2, 2001Date of Patent: February 19, 2002Assignee: BASF AktiengesellschaftInventors: Claudia Merk, Peter Bassler, Rolf Fischer, Guido Voit, Hermann Luyken