Cycloaliphatic Ring Bonded Directly To The Diazole Ring Patents (Class 548/345.1)
  • Patent number: 8946443
    Abstract: A compound represented by the following general formula (I) or a pharmacologically acceptable salt thereof, wherein R1 represents a C1 to C6 alkyl group which may be substituted by one to three groups selected from substituent group A, or the like (substituent group A: a hydroxy group, a halogeno group, a cyano group, a nitro group, an amino group, a carboxy group, a C1 to C3 alkyl group, etc.); R2, R3, and R8 each independently represent a hydrogen atom or a C1 to C3 alkyl group; R4, R5, R6, R7, R9, and R10 each independently represent a hydrogen atom or the like; and R11 represents a hydrogen atom or the like, has TAFIa enzyme inhibitory activity and is useful as a therapeutic drug for myocardial infarction, angina pectoris, acute coronary syndrome, cerebral infarction, deep vein thrombosis, pulmonary embolism, or the like.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: February 3, 2015
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Tsutomu Nagata, Jun Kobayashi, Yoshiyuki Onishi, Masamichi Kishida, Kengo Noguchi
  • Patent number: 8785488
    Abstract: The present invention comprises TGR5 agonists of structural formula I, wherein X, R1, R2, and R5 are defined herein, as well as N-oxides of them and pharmaceutically acceptable salts thereof. The invention further comprises composition comprising the compounds, N-oxides, and/or pharmaceutically acceptable salts thereof. The invention also comprises use of the compounds and compositions for treating diseases in which TGR5 is a mediator or is implicated. The invention also comprises use of the compounds in and for the manufacture of medicaments, particularly for treating diseases in which TGR5 is a mediator or is implicated.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: July 22, 2014
    Assignee: Exelixis Patent Company LLC
    Inventors: Venkataiah Bollu, Brant Clayton Boren, Jackaline Dalgard Julien, Brenton T. Flatt, Nadia Haq, Sarah Hudson, Raju Mohan, Michael Morrissey, Benjamin Pratt, Tie-Lin Wang, Richard Martin, Xiao-Hui Gu
  • Publication number: 20140107340
    Abstract: The present invention is directed to benzamide containing compounds which inhibit the P2X7 receptor
    Type: Application
    Filed: October 10, 2013
    Publication date: April 17, 2014
    Applicant: H. Lundbeck A/S
    Inventors: John Paul Kilburn, Lars Kyhn Rasmussen, Mikkel Jessing, Eman Mohammed Eldemenky, Bin Chen, Yu Jiang, Allen T. Hopper
  • Patent number: 8653125
    Abstract: The present invention discloses novel cyclohexane derivatives having NPY Y5 receptor antagonistic activity. Specifically, the present invention discloses a compound represented by the formula (I), or a pharmaceutically acceptable salt or a solvate thereof: wherein A is substituted or unsubstituted aryl or heterocyclyl; a combination of X and Y is a combination selected from (X, Y)?(C(?O)N(R1), C(?O)N(R2)), (C(?O)N(R1), imidazole-1,3-diyl), (N(R1), C(?O)N(R2)), (O, C(?O)N(R2)), (C(R3)(R4), N(R2)) or (a single bond, C(?O)N(R2)); R1, R2 and R3 are independently hydrogen or substituted or unsubstituted alkyl; R5 is substituted or unsubstituted aryl or heterocyclyl; R6 is halogen, oxo, substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy; m is 0 or 1; and n is an integer of 0 to 5; and B is aromatic carbocycle, monocyclic heterocycle or fused bicyclic heterocycle.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 18, 2014
    Assignee: Shionogi Co., Ltd.
    Inventors: Hiroshi Yoshida, Keisuke Tonogaki, Masahiro Sakagami, Kenji Takaya
  • Publication number: 20130252930
    Abstract: Provided herein are inhibitors of CYP11B, CYP17, and/or CYP21 enzymes of Formula (Z), (IX), (X), (XI), (XII), (XIII), (XIV), (XV), (XVI), or (XVII). Also described herein are pharmaceutical compositions that include at least one compound described herein and the use of a compound or pharmaceutical composition described herein to treat androgen-dependent diseases, disorders and conditions.
    Type: Application
    Filed: December 16, 2011
    Publication date: September 26, 2013
    Applicant: BIOMARIN PHARMACEUTICAL INC.
    Inventors: Daniel Chu, Bing Wang, Tao Ye
  • Publication number: 20130190508
    Abstract: Novel N-heterocyclic carbene ligand precursors, N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are provided. Metal-carbene complexes comprising N-heterocyclic carbene ligands can be chiral, which are useful for catalyzing enantioselective synthesis. Methods for the preparation of the N-heterocyclic carbene ligands and N-heterocyclic metal-carbene complexes are given.
    Type: Application
    Filed: March 8, 2013
    Publication date: July 25, 2013
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventor: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
  • Patent number: 8431717
    Abstract: The invention provides an improved, highly efficient method for preparing 5-(2-ethyl-2,3-dihydro-1H-inden-2-yl)-1H-imidazole, and its salts, in particular its pharmaceutically acceptable salts.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: April 30, 2013
    Assignee: JSC Grindeks
    Inventors: Viesturs Lusis, Dzintra Muceniece, Inese Reine, Armands Zandersons
  • Publication number: 20130012532
    Abstract: A compound represented by the following general formula (I) or a pharmacologically acceptable salt thereof, wherein R1 represents a C1 to C6 alkyl group which may be substituted by one to three groups selected from substituent group A, or the like (substituent group A: a hydroxy group, a halogeno group, a cyano group, a nitro group, an amino group, a carboxy group, a C1 to C3 alkyl group, etc.); R2, R3, and R8 each independently represent a hydrogen atom or a C1 to C3 alkyl group; R4, R5, R6, R7, R9, and R10 each independently represent a hydrogen atom or the like; and R11 represents a hydrogen atom or the like, has TAFIa enzyme inhibitory activity and is useful as a therapeutic drug for myocardial infarction, angina pectoris, acute coronary syndrome, cerebral infarction, deep vein thrombosis, pulmonary embolism, or the like.
    Type: Application
    Filed: March 14, 2011
    Publication date: January 10, 2013
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Tsutomu Nagata, Jun Kobayashi, Yoshiyuki Onishi, Masamichi Kishida, Kengo Noguchi
  • Publication number: 20120130084
    Abstract: The application relates to processes for preparing fipamezole and its pharmaceutically acceptable salts, and intermediates thereof. It also provides intermediate compounds of Formula III and Formula IV, and processes for their preparation.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LTD.
    Inventors: Ranjan Bhowmik Dipal, Lingam Yedugani, Raghavndra Rao Kamaraju, Subba Rao Jammula, Swapna Manikonda, Vilas H. Dahanukar
  • Publication number: 20120071506
    Abstract: The present invention relates to a method for treating a disorder selected from depression, anxiety disorders, bipolar disorder, attention deficit hyperactivity disorder, stress-related disorders, psychotic disorders such as schizophrenia, neurological diseases such as Parkinson's disease, neurodegenerative disorders such as Alzheimer's disease, epilepsy, migraine, hypertension, substance abuse and metabolic disorders such as eating disorders, diabetes, diabetic complications, obesity, dyslipidemia, disorders of energy consumption and assimilation, disorders and malfunction of body temperature homeostasis, disorders of sleep and circadian rhythm, and cardiovascular disorders which comprises administering to an individual a therapeutically effective amount of a compound of formula I wherein R1, R2, Q, W, X, Y, m, and n are as defined in the specification, and their pharmaceutically active salts, racemic mixtures, enantiomers, optical isomers and tautomeric forms.
    Type: Application
    Filed: November 23, 2011
    Publication date: March 22, 2012
    Inventors: Guido Galley, Katrin Groebke Zbinden, Roger Norcross, Henri Stalder
  • Publication number: 20110201709
    Abstract: The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerisation catalyst system comprises: (a) an imidazolium or imidazolinium cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises: (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerisation catalyst system, based on the weight of the precursor formulation, comprising; (a) an imidazolium or imidazolinium cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C.
    Type: Application
    Filed: November 9, 2009
    Publication date: August 18, 2011
    Applicant: Dow Global Technologies LLC
    Inventors: Phillip Athey, Nathan Wilmot, Richard Keaton, David A. Babb, Cecile Boyer, Timothy Morley
  • Publication number: 20110065766
    Abstract: The present invention relates, in part, to methods of treatment, prevention, and inhibition of viral disorders. In one aspect, the present invention relates to inhibition of the M2 proton channel of influenza viruses (e.g. influenza A virus) and other similar viroporins (e.g., VP24 of Ebola and Marburg viruses; and NS3 protein of Bluetongue). The present invention further relates, inter alia, to compounds which have been shown to possess antiviral activity, in particular, inhibiting the M2 proton channel of influenza viruses.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Inventors: Jizhou Wang, Xiaodong Fan, Lidia Cristian
  • Publication number: 20110059974
    Abstract: Retinoic acid metabolism blocking agents (RAMBAs). The RAMBAs may be used for treatment of cancer, including breast and prostate cancers. Methods for preparing novel retinamide RAMBAs. The methods include reacting RAMBAs with terminal polar carboxylic acid group with a variety of amines in the presence of suitable coupling reagents. The retinamide RAMBAs are potent inhibitors of the growth of prostate and breast cancer cells and may be useful for the treatment of these diseases in humans.
    Type: Application
    Filed: May 7, 2009
    Publication date: March 10, 2011
    Applicant: UNIVERSITY OF MARYLAND, BALTIMORE
    Inventors: Vincent C. O. Njar, Lalji K. Gediya, Aakanksha Khandelwal
  • Publication number: 20110028733
    Abstract: The invention provides an improved, highly efficient method for preparing 5-(2-ethyl-2,3-dihydro-1H-inden-2-yl)-1H-imidazole, and its salts, in particular its pharmaceutically acceptable salts.
    Type: Application
    Filed: December 3, 2008
    Publication date: February 3, 2011
    Inventors: Viesturs Lusis, Dzintra Muceniece, Inese Reine, Armands Zandersons
  • Patent number: 7880017
    Abstract: The present invention provides a process for the preparation of imidazoles by reacting a cyano compound with a silylalkylisocyanide compound. Such imidazoles are useful pharmacologically-active compounds and/or intermediates for the preparation of pharmacologically-active compounds.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: February 1, 2011
    Assignee: Allergan, Inc.
    Inventors: Lloyd J. Dolby, Shervin Esfandiari, Michael E. Garst
  • Patent number: 7754053
    Abstract: The invention relates to a process for the distillation of ionic liquids, in which a pressure not higher than ambient pressure is set in a first step and the ionic liquid is heated to a temperature in the range from 60° C. to 350° C. in a second step. The process is employed, in particular, for the purification of ionic liquids.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: July 13, 2010
    Assignee: BASF SE
    Inventor: Matthias Maase
  • Publication number: 20100152261
    Abstract: A nitrogen-containing heterocyclic derivative represented by the following general formula (I), or a hydrate or solvate thereof, which has a selective antagonistic action on the muscarinic M3 receptor and causes reduced cardiac side effect and thus is safe, and has superior pharmacological efficacy and prolonged action even by inhalation administration, and a pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: July 25, 2006
    Publication date: June 17, 2010
    Applicant: MITSUBISHI TANABE PHARMA CORPORATION
    Inventors: Hideyuki Aizawa, Makoto Seki, Jun-ichi Endoh, Minoru Tanaka, Naoto Fujie, Osamu Sakuma, Takao Kamahori
  • Publication number: 20080312451
    Abstract: The invention provides a process for the preparation of a sartan derivative of formula (I) (formula as filed in paper form) (I) wherein the substituents have the meaning indicated in the description, or a pharmaceutically acceptable salt thereof, comprising reacting 2-cyanophenylboronic acid or a derivative thereof with a p-halobenzyl-1H-imidazole derivative of formula (VI), (formula as filed in paper form) (VI) wherein (part of formula as filed in paper form), X, Y, R1 and R2 are as defined above, and Z is I, Br or Cl, in the presence of a transition metal catalyst and an inorganic or organic base.
    Type: Application
    Filed: September 20, 2006
    Publication date: December 18, 2008
    Applicant: KRKA, d.d. Novo mesto
    Inventors: Miroslav Veverka, Martin Putala, Heinrich Brath, Silvo Zuppancic
  • Publication number: 20080296305
    Abstract: A method and device for storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. Provided within a vessel is a nancomposite material comprising an imidazolium surfactant and an integral solvent that is essential to the formation of the nancomposite material. The fluid is contacted with the nanocomposite material for take-up of the fluid by the polymerized nanocomposite material. The fluid is released from the nanocomposite material and dispensed from the vessel.
    Type: Application
    Filed: June 30, 2007
    Publication date: December 4, 2008
    Applicant: Matheson Tri-Gas
    Inventors: Carrie L. Wyse, Robert Torres, Andrew R. Millward, Richard D. Noble, Jason Edward Bara, Douglas Gin
  • Publication number: 20070197620
    Abstract: The present invention relates to a method for treating a disorder selected from depression, anxiety disorders, bipolar disorder, attention deficit hyperactivity disorder, stress-related disorders, psychotic disorders such as schizophrenia, neurological diseases such as Parkinson's disease, neurodegenerative disorders such as Alzheimer's disease, epilepsy, migraine, hypertension, substance abuse and metabolic disorders such as eating disorders, diabetes, diabetic complications, obesity, dyslipidemia, disorders of energy consumption and assimilation, disorders and malfunction of body temperature homeostasis, disorders of sleep and circadian rhythm, and cardiovascular disorders which comprises administering to an individual a therapeutically effective amount of a compound of formula I wherein R1, R2, Q, W, X, Y, m, and n are as defined in the specification d or not; and their pharmaceutically active salts, racemic mixtures, enantiomers, optical isomers and tautomeric forms.
    Type: Application
    Filed: January 19, 2007
    Publication date: August 23, 2007
    Inventors: Guido Galley, Katrin Groebke Zbinden, Roger Norcross, Henri Stalder
  • Patent number: 7034034
    Abstract: Substituted 2-cyclohexyl-4-phenyl-1H-imidazole derivatives capable of modulating NPY5 receptor activity, are provided. Such compounds may be used to modulate NPY binding to NPY5 receptors in vivo or in vitro, and are particularly useful in the treatment of a variety of disorders (e.g., eating disorders such as obesity or bulimia, psychiatric disorders, diabetes and cardiovascular disorders such as hypertension) in humans, domesticated companion animals and livestock animals. Pharmaceutical compositions and methods for treating such disorders are provided, as are methods for using such compounds for detecting NPY5 receptors.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: April 25, 2006
    Assignee: Neurogen Corporation
    Inventors: Charles A. Blum, Harry L. Brielmann, Stephane De Lombaert, Xiaozhang Zheng
  • Patent number: 6878734
    Abstract: Ligands for the gastrin and cholecystokinin (CCK) receptors are provided, together with methods for preparing such ligands, and compounds which are useful intermediates in such methods. Pharmaceutical compositions comprising such ligands, methods for preparing such pharmaceutical compositions, and methods of treatment using these compositions also are provided.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: April 12, 2005
    Assignee: James Black Foundation Limited
    Inventors: Sarkis Barret Kalindjian, Ildiko Maria Buck, Katherine Isobel Mary Steel, Paul Trevor Wright, Matthew John Tozer, Michael John Pether, Caroline Minli Rachel Low
  • Patent number: 6794405
    Abstract: Alicyclic imidazole compounds; pharmaceutically active compositions containing such compounds; and the use of such compounds in formulations for the control or prevention of disease states in which histamine H3 receptors are involved, such as allergy, inflammation, hypotension, glaucoma, sleeping disorders, states of hyper- and hypo-motility of the gastro-intestinal tract, cardiovascular disease, hypo- and hyper-activity of the central nervous system, Alzheimer's, schizophrenia, obesity and migraines are disclosed.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: September 21, 2004
    Assignee: Merck & Co., Inc.
    Inventors: Yajing Rong, Jack B. Jiang, Syed M. Ali
  • Publication number: 20030191116
    Abstract: Compounds of formula (I) and their pharmaceutically acceptable salts are ligands at gastrin and/or cholecystokinin receptors.
    Type: Application
    Filed: April 10, 2003
    Publication date: October 9, 2003
    Inventors: Sarkis Barret Kalindjian, Ildiko Maria Buck, Caroline Minli Rachel Low, Matthew John Tozer
  • Patent number: 6603019
    Abstract: Compounds having Formula 4 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 5, 2003
    Assignee: Allergan, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Roshantha A. Chandraratna
  • Patent number: 6525082
    Abstract: A substance for inducing apoptosis represented by specific formulae. A pharmaceutical composition which can be used for an anticancer agent containing said substance.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 25, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Tatsuji Enoki, Nobuto Koyama, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6518305
    Abstract: Disclosed are compounds of the formula: which are useful for inhibiting neuraminidases from disease-causing microorganisms, especially, influenza neuraminidase. Also disclosed are compositions and methods for preventing and treating diseases caused by microorganisms having a neuraminidase, processes for preparing the compounds and synthetic intermediates used in these processes.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: February 11, 2003
    Assignee: Abbott Laboratories
    Inventors: Clarence J. Maring, Yuanwei Chen, David A. Degoey, Vincent L. Giranda, David J. Grampovnik, Yu Gui Gu, Warren M. Kati, Dale J. Kempf, April Kennedy, Allan C. Krueger, Zhen Lin, Darold L. Madigan, Steven W. Muchmore, Hing L. Sham, Kent D. Stewart, Vincent S. Stoll, Minghua Sun, Gary T. Wang, Sheldon Wang, Ming C. Yeung, Chen Zhao
  • Patent number: 6479530
    Abstract: Imidazole derivatives of formula I wherein n is 0 or 1, R1 is hydrogen or C1-C4-alkyl, R2 is hydrogen or R2 and R3 together form a double bond, R3 is hydrogen or C1-C4-alkyl or R2 and R3 together form a double bond, R4 is hydrogen, C1-C4-alkyl, hydroxy or C1-C4-alkoxy, R5 is hydrogen or C1-C4-alkyl or R4 and R5 together with the carbon atom to which they are attached form a carbonyl group, R6, R7 and R8 are each the same or different and are independently hydrogen, C1-C4-alkyl or C2-C4-alkenyl, C3-C7-cycloalkyl, hydroxy, C1-C4-alkoxy, C1-C4-hydroxyalkyl, thiol, C1-4-alkylthio, C1-4-alkylthiol, halogen, trifluoromethyl, nitro or optionally substituted amino, X is —CHR9—(CHR10)m—, m is 0 or 1, and R9 and R10 are each the same or different and are independently hydrogen or C1-C4-alkyl; or a pharmaceutically acceptable ester or salt thereof, their preparation, use and pharmaceutical compositions comprising them are described.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: November 12, 2002
    Assignee: Orion Corporation
    Inventors: Arto Karjalainen, Paavo Huhtala, Juha-Matti Savola, Siegfried Wurster, Maire Eloranta, Maarit Hillilä, Raimo Saxlund, Victor Cockcroft, Arja Karjalainen
  • Patent number: 6426360
    Abstract: A class of compounds is described for treating inflammation and inflammation-related disorders.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: July 30, 2002
    Assignee: G D Searle & Co.
    Inventors: Richard M Weier, Paul W Collins, Michael A Stealey, Thomas E Barta, Renee M Huff
  • Patent number: 6362211
    Abstract: A compound of formula I wherein R1 to R3, —A—, m and t are as defined in claim 1, or a pharmaceutically acceptable salt or ester thereof, useful as an alpha2 adrenergic agent.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: March 26, 2002
    Assignee: Orion Corporation
    Inventors: Jari Ratilainen, Paavo Huhtala, Arto Karjalainen, Arja Karjalainen, Antti Haapalinna, Raimo Virtanen, Jyrki Lehtimäki
  • Patent number: 6316380
    Abstract: This invention provides a catalyst system useful in many coupling reactions, such as Suzuki, Kumada, Heck, and amination reactions. The catalyst system of the present invention makes use of N-heterocyclic carbenes or their protonated salts. The composition of the catalyst system comprises at least one transition metal compound and at least one N-heterocyclic carbene or its protonated salt. This invention further provides novel N-heterocyclic carbenes and their protonated salts. One type of N-heterocyclic carbene used in this invention is an imidazolinc-2-ylidene wherein the 1 and 3 positions are each, independently, substituted by an aromatic group in which each ortho position is, independently, substituted by a secondary or tertiary group which has at least three atoms.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: November 13, 2001
    Assignee: University of New Orleans Research & Technology Foundation
    Inventors: Steven P. Nolan, Jinkun Huang, Mark L. Trudell, Chunming Zhang
  • Patent number: 6313311
    Abstract: Imidazole derivatives of formula (I) wherein n is 0 or 1, R1 is hydrogen or C1-C4-alkyl, R2 is hydrogen or R2 and R3 together form a double bond, R3 is hydrogen or C1-C4-alkyl or R2 and R3 together form a double bond, R4 is hydrogen, C1-C4-alkyl, hydroxy or C1-C4-alkoxy, R5 is hydrogen or C1-C4-alkyl or R4 and R5 together with the carbon atom to which they are attached form a carbonyl group, R6, R7 and R8 are each the same or different and are independently hydrogen, C1-C4-alkyl or C2-C4-alkenyl, C3-C7-cycloalkyl, hydroxy, C1-C4-alkoxy, C1-C4-hydroxyalkyl, thiol, C1-4-alkylthio, C1-4-alkylthiol, halogen, trifluoromethyl, nitro or optionally substituted amino, X is —CHR9—(CHR10)m—, m is 0 or 1, and R9 and R10 are each the same or different and are independently hydrogen or C1-C4-alkyl; or a pharmaceutically acceptable ester or salt thereof, their preparation, use and pharmaceutical compositions comprising them are described.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: November 6, 2001
    Assignee: Orion Corporation
    Inventors: Arto Karjalainen, Paavo Huhtala, Juha-Matti Savola, Siegfried Wurster, Maire Eloranta, Maarit Hillilä, Raimo Saxlund, Victor Cockcroft, Arja Karjalainen
  • Patent number: 6177575
    Abstract: Imidazoles may be manufactured by reacting a glyoxal, ammonia, an aldehyde, and optionally a primary amine, in the presence of a Bronsted acid whose pKa is approximately equal to the pKa of the ammonium cation of the primary amine, or if the primary amine is not present, to the pKa of the ammonium (NH4+) cation. The reaction may be used to make in relatively high yields a wide variety of imidazoles using relatively inexpensive starting materials. The imidazoles are useful as chemical intermediates.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: January 23, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Anthony J. Arduengo, III, Frederick P. Gentry, Jr., Prakash K. Taverkere, Howard E. Simmons, III