Hetero Nitrogen Containing Patents (Class 204/157.71)
  • Patent number: 11254642
    Abstract: 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: Grant
    Filed: December 5, 2018
    Date of Patent: February 22, 2022
    Assignees: 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
  • Patent number: 10208029
    Abstract: 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: Grant
    Filed: March 1, 2016
    Date of Patent: February 19, 2019
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventor: Yi Liao
  • Publication number: 20150053545
    Abstract: 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: Application
    Filed: November 3, 2014
    Publication date: February 26, 2015
    Inventors: Roman Gordon, Igor Gorodnitsky, Maxim A. Promtov
  • Publication number: 20150032045
    Abstract: 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: Application
    Filed: December 21, 2012
    Publication date: January 29, 2015
    Inventors: Rafael Yuste, Roberto Etchenique, Luis Baraldo
  • Publication number: 20140302099
    Abstract: 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: Application
    Filed: October 9, 2012
    Publication date: October 9, 2014
    Inventor: Yong Nam KIM
  • Publication number: 20140246303
    Abstract: 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: Application
    Filed: April 14, 2014
    Publication date: September 4, 2014
    Applicant: ARKEMA FRANCE
    Inventor: Thierry AUBERT
  • Publication number: 20140061026
    Abstract: 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: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicants: Karlsruher Institut fuer Technologie (KIT), BASF SE
    Inventors: Wolfgang Gerlinger, Bernd Sachweh, Michael Woerner, Ertan Akguen, Stephanie Sigmund, Gerhard Kasper
  • Patent number: 8541625
    Abstract: 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: Grant
    Filed: August 6, 2012
    Date of Patent: September 24, 2013
    Assignee: University of Georgia Research Foundation, Inc.
    Inventors: Vladimir V. Popik, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
  • Publication number: 20130192978
    Abstract: 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: Application
    Filed: January 23, 2013
    Publication date: August 1, 2013
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventor: University of Central Florida Research Foundation, Inc.
  • Publication number: 20130164803
    Abstract: 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: Application
    Filed: August 6, 2012
    Publication date: June 27, 2013
    Applicant: University of George Research Foundation, Inc.
    Inventors: VLADIMIR V. POPIK, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
  • Publication number: 20130131350
    Abstract: 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: Application
    Filed: July 20, 2011
    Publication date: May 23, 2013
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Jadab Chandra Sarma, Dilip Chandra Bora, Paruchuri Gangadhar Rao, Balaram Ghosh, Sakshi Balwani
  • Publication number: 20130118955
    Abstract: 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: Application
    Filed: January 3, 2013
    Publication date: May 16, 2013
    Applicant: INSTITUTO MEXICANO DEL PETROLEO
    Inventor: Instituto Mexicano del Petroleo
  • Publication number: 20130109858
    Abstract: A core-expanded perylene diimide compound having general formula A useful as a fluorescent dye is synthesized:
    Type: Application
    Filed: July 16, 2010
    Publication date: May 2, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventor: Nobukazu Negishi
  • Patent number: 8404088
    Abstract: 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: Grant
    Filed: March 19, 2012
    Date of Patent: March 26, 2013
    Assignee: Trustees of Boston University
    Inventors: John A. Porco, Jr., Baudouin Gerard
  • Publication number: 20120295318
    Abstract: 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: Application
    Filed: August 6, 2012
    Publication date: November 22, 2012
    Applicant: University of George Research Foundation, Inc.
    Inventors: VLADIMIR V. POPIK, Andrei A. Poloukhtine, Geert-Jan Boons, Margaretha Wolfert
  • Patent number: 8287700
    Abstract: 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: Grant
    Filed: December 17, 2009
    Date of Patent: October 16, 2012
    Assignee: Spring Bank
    Inventors: Seetharamaiyer Padmanabhan, Radhakrishnan P. Iyer
  • Publication number: 20120181163
    Abstract: 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: Application
    Filed: February 3, 2012
    Publication date: July 19, 2012
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shinji INAGAKI, Masao AOKI, Ken-ichi YAMANAKA, Kiyotaka NAKAJIMA, Masataka OHASHI
  • Publication number: 20120135249
    Abstract: Aromatic and aromatic/heteroaromatic molecular structures with controllable electron conducting properties are derived from the incorporation of electron active substituents in selective positions.
    Type: Application
    Filed: February 8, 2012
    Publication date: May 31, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ROGER HARQUAIL FRENCH, ROSS GETTY, SIMONA PERCEC
  • Patent number: 8137509
    Abstract: 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: Grant
    Filed: May 21, 2007
    Date of Patent: March 20, 2012
    Assignee: Trustees of Boston University
    Inventors: John A. Porco, Jr., Baudouin Gerard
  • Patent number: 8133940
    Abstract: 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: Grant
    Filed: July 31, 2009
    Date of Patent: March 13, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Michael A. Zalich, Simion Coca, Gregory J. McCollum
  • Publication number: 20110311505
    Abstract: 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: Application
    Filed: December 11, 2009
    Publication date: December 22, 2011
    Inventors: 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
  • Publication number: 20110245503
    Abstract: 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: Application
    Filed: November 27, 2009
    Publication date: October 6, 2011
    Applicant: UNIVERSIDAD DE TALCA
    Inventors: Leonardo Santos, Marlene Espinoza Moraga, Nagula Shankarajah
  • Publication number: 20110195028
    Abstract: 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: Application
    Filed: July 31, 2009
    Publication date: August 11, 2011
    Inventor: Warren S. Warren
  • Publication number: 20110105760
    Abstract: 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: Application
    Filed: July 3, 2009
    Publication date: May 5, 2011
    Applicant: BASF SE
    Inventors: Michael Keil, Michael Rack, Thomas Zierke, Markus Heinrich, Alexander Wetzel
  • Publication number: 20110004003
    Abstract: 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: Application
    Filed: August 1, 2008
    Publication date: January 6, 2011
    Applicant: The University of Tokyo
    Inventors: Hiroshi Nishihara, Ryota Sakamoto
  • Publication number: 20100326813
    Abstract: 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: Application
    Filed: July 2, 2010
    Publication date: December 30, 2010
    Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Somenath Mitra, Zafar Iqbal
  • Publication number: 20100160632
    Abstract: 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: Application
    Filed: May 14, 2008
    Publication date: June 24, 2010
    Inventors: Paul Knochel, Stefan Wunderlich
  • Publication number: 20100096251
    Abstract: 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: Application
    Filed: December 17, 2009
    Publication date: April 22, 2010
    Inventors: Seetharamaiyer Padmanabhan, Radhakrishnan P. Iyer
  • Publication number: 20090264494
    Abstract: 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 stroke
    Type: Application
    Filed: May 13, 2009
    Publication date: October 22, 2009
    Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, SOUTHERN METHODIST UNIVERSITY
    Inventors: Santosh R. D'Mello, Edward Biehl
  • Patent number: 7524966
    Abstract: 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: Grant
    Filed: October 8, 2003
    Date of Patent: April 28, 2009
    Assignee: University of Iowa Research Foundation
    Inventor: Leonard R. MacGillivray
  • Publication number: 20040026230
    Abstract: The invention describes a method for effecting intramolecular cyclization reactions using light, in the absence of radical initiators, to provide useful polycyclic compounds.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 12, 2004
    Inventors: Roman Davis, Thomas Claiborne Lovelace
  • Publication number: 20030230478
    Abstract: The present invention provides a process for the preparation of 1,4-dihydropyridines of the formula 1 1
    Type: Application
    Filed: March 20, 2003
    Publication date: December 18, 2003
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Neeraj Mahendroo, Ravi Kumar Khajuria, Kasturi Lal Bedi, Kanaya Lal Dhar, Vijay Kumar Kapoor
  • Patent number: 6551467
    Abstract: 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: Grant
    Filed: April 16, 2001
    Date of Patent: April 22, 2003
    Assignee: Personal Chemistry i Uppsala AB
    Inventors: Ulf Bremberg, Anders Hallberg, Mats Larhed, Christina Moberg, Nils-Fredrik Kaiser
  • Patent number: 6491796
    Abstract: 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: Grant
    Filed: June 26, 2001
    Date of Patent: December 10, 2002
    Assignees: Agi Corporation, National Tsing Hua University
    Inventors: Andrew Teh Hu, Tsai-Wie Tseng, Herng-Dar Hwu, Lung-chang Liu, Chung-Chun Lee, Ming-Chia Lee, Jun-Rong Chen
  • Patent number: 6348630
    Abstract: 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: Grant
    Filed: January 2, 2001
    Date of Patent: February 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Claudia Merk, Peter Bassler, Rolf Fischer, Guido Voit, Hermann Luyken