Halogen Patents (Class 562/456)
  • Patent number: 5905127
    Abstract: Mesogens are provided based on substituted unsaturated carboxylic acids such as acrylic and methacrylic acid. Substitution of a variety of hydrophobic tails onto the carboxylic acid or acid derivative via the vinyl carbon proximal to the carbonyl of the carboxylic acid results in mesogens that are capable of forming thermotropic and single-phase lyotropic mesophases over a broad range of compositions. The mesophases can be polymerized to lock in the ordered phases.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: May 18, 1999
    Assignee: The University of Southern Mississippi
    Inventors: Robert Y Lochhead, Lon J Mathias
  • Patent number: 5863944
    Abstract: Carrier compounds and compositions therewith which are useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: January 26, 1999
    Assignee: Emisphere Technologies, Inc.
    Inventors: Andrea Leone-Bay, David Gschneidner, Eric Wang, Donald J. Sarubbi
  • Patent number: 5821385
    Abstract: The present invention relates to a process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine of the formula (1) ##STR1## which comprises reacting 2,4-dichlorobenzoic acid of the formula (2) ##STR2## with glycine and a base in water at a temperature of 50.degree. to 200.degree. C. in the presence of copper and oxygen at a pH of 7 to 13.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: October 13, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Stefan Krause, Doris Neumann-Grimm, Theodor Papenfuhs
  • Patent number: 5773651
    Abstract: Process for the preparation of fluorine-containing compounds by reduction in a container provided with a stirrer, the stirrer being constructed entirely or partly of a carbon material.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: June 30, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ralf Pfirmann, Friedrich Seitz
  • Patent number: 5763481
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is C.sub.3 -C.sub.8 cycloalkyl, halo-C.sub.3 -C.sub.8 cycloalkyl, C.sub.3 -C.sub.8 cycloalkyl-C.sub.1 -C.sub.6 alkyl, halo-C.sub.3 -C.sub.8 cycloalkyl-C.sub.1 -C.sub.6 alkyl, --Si(R.sub.3).sub.3, --S--R.sub.4, --SO.sub.2 --R.sub.6 or --CO--R.sub.9 ;R.sub.2 is halogen, C.sub.1 -C.sub.4 alkyl or CF.sub.3, the substituents R.sub.2 being identical or different when n is 2;R.sub.3 each independently of the others is C.sub.1 -C.sub.6 alkyl, halo-C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or phenyl;R.sub.4 is aryl or heteroaryl each of which is unsubstituted or substituted;R.sub.6 is unsubstituted or substituted C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.1 -C.sub.20 -alkoxy, C.sub.2 -C.sub.6 alkenyloxy, C.sub.2 -C.sub.6 alkynyloxy, C.sub.1 -C.sub.4 alkylthio, aryl, aryloxy or arylthio, or is optionally substituted amino;R.sub.9 is hydroxy, unsubstituted or substituted C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.6 alkenyl, C.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: June 9, 1998
    Assignee: Novartis Corproation
    Inventors: Peter Maienfisch, Manfred Boger, Thomas Pitterna, Henry Szczepanski
  • Patent number: 5763650
    Abstract: The present invention refers to a process for the preparation of 5-amino-2,4,6-triiodo-1,3-benzenedicarboxylic acid, comprising the following steps:a) catalytic hydrogenation of 5-nitro-1,3-benzenedicarboxylic acid in neutral or basic environment, which gives an aqueous solution of 5-amino-1,3-benzenedicarboxylic acid sodium salt;b) direct iodination of the 5-amino-1,3-benzenedicarboxylic acid sodium salt solution deriving from step a), without further purification, with a solution of ICl in HCl, being the 5-amino-1,3-benzenedicarboxylic acid sodium salt solution previously added with HCl and H.sub.2 SO.sub.4.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: June 9, 1998
    Assignee: Fructamine S.p.A.
    Inventors: Marina Mauro, Carlo Felice Viscardi, Massimo Gagna
  • Patent number: 5744638
    Abstract: The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## in which X and Y, independently of each other, represent hydrogen, fluorine, chlorine or bromine, but cannot simultaneously represent hydrogen, characterised in that compounds of the general formula II ##STR2## in which X and Y are defined as above, are reacted with aqueous ammonia under copper catalysis, and to intermediates for the preparation of compounds of the general formula I.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: April 28, 1998
    Assignee: Riedel-de Haen Aktiengesellschaft
    Inventors: Horst Schmand, Bernd Kellermeier, Gunter Bartels, Hans-Jurgen Schmidt
  • Patent number: 5739169
    Abstract: Novel compounds ##STR1## wherein R.sup.1 to R.sup.13 are independently selected from C.sub.2 -C.sub.4 linear and branched alkyls, H, NH.sub.2, CH.sub.3, OR.sup.14, fluorine, chlorine, iodine, NO.sub.2, CF.sub.3, NHCOCH.sub.3, NHCOOtBu, NHR.sup.15, NR.sup.16 R.sup.17 and phenyl, for use as immunosuppressive agents to prevent or significantly reduce graft rejection in organ and bone marrow transplantation are described. The novel compounds can also be used as an immunosuppressant drug for T-lymphocyte mediated autoimmune diseases, such as diabetes, and may be useful in alleviating psoriasis and contact dermatitis. Additionally, the novel compounds can be used for antiproliferation and gene therapy.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: April 14, 1998
    Assignee: Procept, Incorporated
    Inventors: Timothy D. Ocain, Huai Gao, Jeffrey I. Krieger, Theresa M. Sampo
  • Patent number: 5726178
    Abstract: Alkyl derivatives of trazodone endowed with pharmacological activity, pharmaceutical compositions containing them, process for preparing them and intermediate compounds useful in their preparation.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: March 10, 1998
    Assignee: Istituto Ricerca Francesco Angelini S.p.A.
    Inventor: Leandro Baiocchi
  • Patent number: 5717109
    Abstract: The present invention provides compounds of formula ##STR1## in which R represents an organic group, or a pharmaceutically acceptable metabolically labile ester or amide thereof, or a pharmaceutically acceptable salt thereof, which are useful as antagonists of one or more of the actions of L-glutamate at metabotropic excitatory amino acid receptors.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: February 10, 1998
    Assignee: Eli Lilly and Company
    Inventors: M. Brian Arnold, Thomas J. Bleisch, David R. Helton, Mary Jeanne Kallman, Paul L. Ornstein, Darryle D. Schoepp, Joseph P. Tizzano
  • Patent number: 5672708
    Abstract: N-arylaminoacrylic acid derivatives are obtained in good yields and in high purities when benzoylacetic acid derivatives are reacted with N-arylimino ethers. The products thus prepared are used, in particular, for the preparation of 4-quinolone-3-carboxylic acid derivatives, which have an outstanding bactericidal action.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: September 30, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Rauchschwalbe, Bernhard Beitzke, Wolfgang Eymann, Helmut Fiege
  • Patent number: 5643957
    Abstract: Modified amino acid compounds useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: July 1, 1997
    Assignee: Emisphere Technologies, Inc.
    Inventors: Andrea Leone-Bay, Duncan R. Paton, Koc-Kan Ho, Frenel DeMorin
  • Patent number: 5578639
    Abstract: Certain compounds have been synthesized and found to be effective inhibitors of phospholipase A.sub.2 (PLA.sub.2), and thereby useful in the treatment of intestinal cholesterol absorption and the disease states arising therefrom, such as hypercholesterolemia and coronary artery disease.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: November 26, 1996
    Assignee: Warner-Lambert Company
    Inventor: Reynold Homan
  • Patent number: 5550291
    Abstract: Disclosed herein is a stereospecific synthesis amenable to the large scale preparation of a hydrochloric acid addition salt of a chlorohydrin of the formula ##STR1## wherein R.sup.1 and R.sup.2 are amino protective groups and R.sup.3 is an amino acid side chain or a protected amino acid side chain. The synthesis involves reacting an aldehyde of the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined hereinbefore with (chloromethyl)lithium at -20.degree. C. or below and contacting the resulting diastereoisomeric mixture of lithium alcoholates with aqueous hydrochloric acid to obtain a separable mixture of the hydrochloric acid addition salts of the chlorohydrin and its corresponding hydroxy diastereoisomer. The hydrochloric acid addition salt of the chlorohydrin is transformed readily into corresponding optionally amino-protected aminoepoxides; for example, 3(S)-(tert-butyloxycarbonylamino)-l,2(S)-epoxy-4-phenyl-butane.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: August 27, 1996
    Assignee: Bio-Mega/Boehringer Ingelheim Research, Inc.
    Inventors: Pierre L. Beaulieu, Yvan Guindon, Dominik M. Wernic
  • Patent number: 5543563
    Abstract: Alkyl derivatives of trazodone endowed with pharmacological activity, pharmaceutical compositions containing them, process for preparing them and intermediate compounds useful in their preparation.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: August 6, 1996
    Assignee: Istituto Ricerca Francesco Angelini S.p.A.
    Inventor: Leandro Baiocchi
  • Patent number: 5543550
    Abstract: The present invention relates to a process for the preparation of 5-fluoroanthranilic alkyl esters and/or 5-fluoroanthranilic acid, which comprises dissolving a 3-fluorobenzoic alkyl ester in sulfuric acid and reacting the solution with a nitrating acid at from -10.degree. to 30.degree. C., then adding water, separating off the nitrated reaction product and reacting it with hydrogen at from 50.degree. to 120.degree. C. under elevated pressure in the presence of a catalyst comprising a metal of the platinum group and sulfur, and, if desired, removing 5-fluoroanthranilic alkyl esters by distillation and hydrolyzing them to give 5-fluoroanthranilic acid.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: August 6, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jochen Rapp, Siegfried Planker, Theodor Papenfuhs, G unter Bartels
  • Patent number: 5536868
    Abstract: Compounds of Formula 1 bind to the opioid receptors: ##STR1## wherein R.sub.1 is a group of the formula ##STR2## where W is --(CH.sub.2).sub.a -- (where a is 0, 1, or 2), --O--, --NH--, --S--, --SO--, or --SO.sub.2 --, and Ar is phenyl, phenyl-alkyl, phenyl substituted with 1-3 halo, nitro, lower alkyl, hydroxy, amino, alkylamino, dialkylamino, and/or hydroxy-lower alkyl groups, and n is 0, 1, 2, 3, or 4;R.sub.2 and R.sub.3 are each independently H, lower alkyl, or ##STR3## where X is H, OH, lower alkyl, or lower alkoxy, and p is 0, 1, 2, or 3; R.sub.4 is ##STR4## where m is 0, 1, 2, or 3, and R is 1-3 halo, nitro, lower alkyl, hydroxy, amino, alkylamino, dialkylamino, and/or hydroxy-lower alkyl groups;R.sub.5 is cycloalkyl, bicycloalkyl, or tricycloalkyl; andR.sub.6, R.sub.7, R.sub.8, and R.sub.9 are each independently H or lower alkyl.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: July 16, 1996
    Assignee: Chiron Corporation
    Inventors: Simon Ng, Robert L. Warne, Ronald N. Zuckermann, Eric J. Martin, Reyna J. Simon
  • Patent number: 5527956
    Abstract: Fluro-substituted aromatic carboxylic acids, and particular 2- and 4-fluorobenzoic acid can be made from the corresponding fluoro-methyl compound such as fluorotoluene in a single stage by the reaction at elevated temperature, preferably of at least 80.degree. C. with hydrogen peroxide and bromide in mole ratios to the substrate of greater than 2:1, and preferably around 3:1, in the presence of means capable of generating bromine free radicals from bromine molecules, such as radiation having a wavelength of not greater than 600 nm or an organic peroxide.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: June 18, 1996
    Assignee: Solvay Interox Limited
    Inventor: Richard G. Jones
  • Patent number: 5523476
    Abstract: A process for producing tetrafluorophthalic anhydride, which comprises chlorinating tetrachlorophthalic anhydride to obtain 3,3,4,5,6,7-hexachloro-1-[3H]-isobenzofuranone, then fluorinating it to obtain 3,4,5,6-tetrafluorophthaloyldifluoride and/or 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone, and further reacting the tetrafluorophthalolyldifluoride and/or the hexafluoro-1-[3H]-isobenzofuranone with an inorganic base or an organic acid to obtain tetrafluorophthalic anhydride.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: June 4, 1996
    Assignee: Asahi Glass Company Ltd.
    Inventors: Ryuji Seki, Koji Sugimoto, Seisaku Kumai
  • Patent number: 5523472
    Abstract: The present invention relates to a process for the preparation of 5-fluoroanthranilic acid, which comprises reacting 5-fluoro-2-bromotoluene in the presence of a catalyst and of an acidic solvent, with oxygen or an oxygen-containing gas at from 80.degree. to 220.degree. C., separating off the 5-fluoro-2-bromobenzoic acid formed and reacting it with ammonia at from 70.degree. to 180.degree. C.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: June 4, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Freimund Rohrscheid, Jochen Rapp, Theodor Papenfuhs
  • Patent number: 5482942
    Abstract: This invention relates to novel 4-(3,4-dioxocyclobuten-1-yl)chromenes and dihydronaphthalenones and 3-(3,4-dioxocyclobuten-1-yl)indenes and salts thereof having smooth muscle relaxing activity, to their use in the treatment of hypertension as well as for treatment of peripheral vascular disease, congestive heart failure, disorders involving excessive smooth muscle contraction of the urinary tract such as incontinence or of the gastrointestinal tract such as irritable bowel syndrome, asthma, and hair loss and to pharmaceutical compositions containing an invention compound. The present invention discloses compounds represented by the formula (I): ##STR1## wherein: R.sub.1 and R.sub.2, independent from each other, are selected from the following: C.sub.1-6 perfluoroalkoxy, C.sub.1-6 perfluoroalkyl, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxyl, C.sub.1-6 alkoxycarbonyl, nitro, cyano, halogen, C.sub.1-6 alkylsulfonamido, C.sub.1-6 perfluoroalkylsulfonamido, amino, C.sub.1-6 acylamino, C.sub.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: January 9, 1996
    Assignee: American Home Products Corporation
    Inventors: Richard M. Soll, Paul J. Dollings
  • Patent number: 5475132
    Abstract: R.sub.3, R.sub.4 and R.sub.5, each represents a hydrogen or halogen atom (at least one of R.sub.3, R.sub.4 and R.sub.5 being other than hydrogen or halogen); optionally substituted amino; optionally halogenated or hydroxylated alkyl, alkoxy, alkylalkoxy or alkylthio; or R.sub.3 and R.sub.4 (in the 3- and 4-positions) can together form a single divalent radical with 3 or 4 members containing 1 or 2 non-adjacent oxygen atoms; are useful as agricultural fungicides.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: December 12, 1995
    Assignee: Rhone-Poulenc Agrochimie
    Inventors: Regis Pepin, Christian Schmitz, Guy-Bernard Lacroix, Philippe Dellis, Christine Veyrat
  • Patent number: 5387594
    Abstract: Di(aromatic) compounds corresponding to the following formula: ##STR1## in which: Ar represents either ##STR2## n=1 or 2 or: ##STR3## X represents a divalent radical, Z represents O, S or a divalent radical,and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent a hydrogen atom or various organic radicals, and the salts of the compounds of formula (I) when R.sub.1 is a carboxylic acid function.Use in human and veterinary medicine and in cosmetics.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: February 7, 1995
    Assignee: Centre International de Recherches Dermatologiques Galderma (Cird Galderma)
    Inventors: Jean-Michel Bernardon, William R. Pilgrim
  • Patent number: 5385917
    Abstract: Carboxylic acid derivatives of the formula: ##STR1## are provided, which are useful for treatment of androgen dependent diseases.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: January 31, 1995
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Hiroaki Ueno, Masahiko Morioka, Fumiko Hatanaka
  • Patent number: 5359120
    Abstract: The invention provides compounds of the formula XX: M-Ar-CONH-R, where Ar represents an aromatic ring system, R-NH is the residue of an .alpha.-amino acid R-NH.sub.2 or oligopeptide R-NH.sub.2 and contains at least one carboxylic acid group in the form of a tertiary butyl ester and M represents a nitrogen mustard group of formula (a), where Y and L, which may be the same or different in a molecule, are leaving groups. The compounds are useful intermediates for the production of nitrogen mustard prodrugs.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: October 25, 1994
    Assignee: Cancer Research Campaign Technology Limited
    Inventor: Caroline J. Springer
  • Patent number: 5344959
    Abstract: Compounds of the formula ##STR1## wherein m is 1-4; R.sub.1 -R.sub.4 independently are hydrogen, lower alkyl of 1 to 6 carbons, Cl, Br, or I; R.sub.5 is hydrogen, lower alkyl of 1 to 6 carbons, Cl, Br, I, lower alkoxy or lower thioalkoxy of 1-6 carbons; R.sub.6 is hydrogen, lower alkyl, Cl, Br, I, OR.sub.11, SR.sub.11, OCOR.sub.11, SCOR.sub.11, NH2, NHR.sub.11, N(R.sub.11).sub.2, NHCOR.sub.11 OR NR.sub.11 --COR.sub.11 ; R.sub.20 is independently hydrogen or lower alkyl; A is (CH.sub.2).sub.n where n is 0-5, lower branched chain alkyl having 3-6 carbons, cycloalkyl having 3-6 carbons, alkenyl having 2-6 carbons and 1 or 2 double bonds, alkynyl having 2-6 carbons and 1 or 2 triple bonds; B is hydrogen, COOH or a pharmaceutically acceptable salt thereof, COOR.sub.8, CONR.sub.9 R.sub.10, --CH.sub.2 OH, CH.sub.2 OR.sub.11, CH.sub.2 OCOR.sub.11, CHO, CH(OR.sub.12).sub.2, CHOR.sub.13 O, --COR.sub.7, CR.sub.7 (OR.sub.12).sub.2, or CR.sub.7 OR.sub.13 O, where R.sub.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: September 6, 1994
    Assignee: Allergan, Inc.
    Inventor: Roshantha A. Chandraratna
  • Patent number: 5334747
    Abstract: Malonic mono-ester mono-anilides and malonic acid mono-anilides and bis-anilides are produced by reaction of malonic acid di-alkyl esters with an aniline in the presence of a stoichiometric amount, based on the aniline, of an alkali alcoholate, accompanied by the initial formation of alkali salts of mono-ester mono-anilides or malonic-acid bis-anilides. Neutralization results in the formation of free malonic mono-ester mono-anilide or malonic-acid bis-anilide and saponification forms the malonic acid mono-anilide. Chloro-substituted anilides of cyclopropyl-1,1-dicarboxylic acid and their mono-esters are preferred.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: August 2, 1994
    Assignee: Huls Aktiengesellschaft
    Inventor: Klaus-Dieter Steffen
  • Patent number: 5324747
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, n, m, o, p and q are as hereinafter set forth, and, when R.sub.2 is hydrogen, pharmaceutically acceptable salts thereof with bases, are described. The compounds of formula 1 are potent inhibitors of phospholipases A.sub.2 (PLA.sub.2 's) and are therefore useful in the treatment of inflammatory diseases, such as psosiasis, inflammatory bowel disease, asthma, allergy, arthritis, dermatitis, gout, pulmonary disease, myocardial ischemia/reperfusion, and trauma induced inflammation, such as spinal cord injury.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: June 28, 1994
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Mathew Carson, Ru-Jen L. Han, Ronald A. LeMahieu, Vincent S. Madison
  • Patent number: 5264577
    Abstract: Novel cyclic amino acids which are useful in preparing biologically active peptides as well as a process for the preparation of D and L enantiomers of the cyclic amino acids are described where an N-protected derivative of the racemic cyclic amino acid is treated with (-)cinchonidine and the resulting salt resolved into the desired enantiomers, as well as derivatives thereof and valuable intermediates used in the process.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: November 23, 1993
    Assignee: Warner-Lambert Company
    Inventors: Vladimir Beylin, Huai G. Chen, Om P. Goel, Mark E. Marlatt, John G. Topliss
  • Patent number: 5254583
    Abstract: New salts of 2-(2,6-dichloroanilino)-phenylacetic acid corresponding to the general formula (I) ##STR1## in which Me stands for a rubidium or caesium atom, a process for the preparation of these salts and pharmaceutical preparations containing these salts are described. The new salts and pharmaceutical preparations containing the salts can be used successfully for the treatment of inflammatory and rheumatic processes and painful conditions.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: October 19, 1993
    Assignee: Heumann Pharma GmbH & Co.
    Inventors: Grafe Ingomar, Schickaneder Helmut, Morsdorf J. Peter, Vergin Hartmut, Ahrens Kurt-Henning
  • Patent number: 5250283
    Abstract: An organic contrast agent analog is derived to contain fluorine moieties. A method for making the organic contrast agent analog includes the steps of fluorinating the contrast agent analog for increasing the acidity of the analog to increase the choleretic activity of the analog and to render it less toxic.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: October 5, 1993
    Assignee: Molecular Biosystems, Inc.
    Inventor: James L. Barnhart
  • Patent number: 5247091
    Abstract: The synthesis of enamines in aqueous media and a process for the preparation of memory enhancing 9-amino-1,2,3,4-tetrahydracridines are described.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: September 21, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Juergen Mueller-Lehar
  • Patent number: 5237089
    Abstract: N-substituted 3,4,5,6-tetrahydrophthalimides and their intermediates of the general formula I ##STR1## where A is --NO.sub.2, --NH.sub.2 or ##STR2## corresponding to the compounds Ia, Ib and Ic, B is --CH.sub.2 --, --CH.sub.2 --CHR.sup.1 --, --CH.sub.2 --CHR.sup.1 --CH.sub.2 --, --CH.dbd., --CH.dbd.CR.sup.1 -- or --CH.dbd.CR.sup.1 --CH.dbd., R.sup.1 being --H, --Cl, --Br or --CH.sub.3, D is ##STR3## or .dbd.C<, depending on the terminal group B, X is --H, --Cl or --Br, Y is --H, C.sub.1 -C.sub.7 -alkyl, --Cl, --Br, --CN, --CONH.sub.2 or --CO.sub.2 R.sup.2, where R.sup.2 is H, C.sub.1 -C.sub.6 -alkyl, C.sub.5 - or C.sub.6 -cycloalkyl, C.sub.1 -C.sub.4 -alkoxy-C.sub.2 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkylmercapto-C.sub.2 -C.sub.4 -alkyl, propargyl, benzyl, .alpha.-phenylethyl, .alpha.-phenylpropyl, C.sub.2 -C.sub.4 -alkyl which is monosubstituted, disubstituted or trisubstituted by F or Cl, or CH.sub.3 -substituted or Cl-substituted allyl, and Z is --COOR.sup.2, --CONR.sup.3 R.sup.4, ##STR4## or --COR.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: August 17, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Plath, Karl Eicken, Norbert Goetz, Jochen Wild, Norbert Meyer, Bruno Wuerzer
  • Patent number: 5233083
    Abstract: The present invention relates to a process for the preparation of 2-amino-3-chlorobenzoic acid by dissolving 1 mol of 2,3-dichlorobenzoic acid in about 400 to about 2000 parts of water with at least the equimolar amount of an alkali metal hydroxide or with an aqueous solution of the equimolar amount of an alkali metal hydroxide, and subsequently reacting it with about 500 to about 2500 mol % of ammonia at temperatures of about 150.degree. to about 220.degree. C. in the presence of copper bronze, copper(I) salts and/or copper(II) salts.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: August 3, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Theodor Papenfuhs, Jochen Rapp
  • Patent number: 5227511
    Abstract: A benzamide derivative of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl, and R is hydroxyl, C.sub.1 -C.sub.6 alkoxy, alkenylalkoxy, alkoxyalkoxy, amino, C.sub.1 -C.sub.4 monoalkylamino, monoalkenylamino, dialkylamino or O-cat wherein cat is a metal, ammonium or an organic cation.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: July 13, 1993
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Hiroyuki Iguchi, Kaoru Kasahara, Shinichi Matsuno, Norimasa Yokoyama, Takeo Motegi
  • Patent number: 5198575
    Abstract: Nitrobenzoic acids I ##STR1## (X.sup.1, X.sup.2 =fluorine, chlorine, bromine, hydrogen or nitro) are prepared by oxidizing the corresponding nitrotoluene II ##STR2## with nitric acid in the presence of sulfuric acid and vanadium(V) compounds, and anthranilic acids III ##STR3## (Y.sup.1, Y.sup.2 =fluorine, chlorine, bromine, hydrogen or amino) are prepared from the nitrobenzoic acids I by reduction.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: March 30, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Hagen, Jacques Dupuis
  • Patent number: 5175356
    Abstract: Novel 8-alkenyl, alkynyl, allenyl and cycloalkyl-quinolinecarboxylic acids are described as antibacterial agents as well as methods of manufacture including novel intermediates used in said manufacture.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: December 29, 1992
    Assignee: Warner-Lambert Company
    Inventors: John M. Domagala, Mark J. Suto, William R. Turner
  • Patent number: 5116834
    Abstract: Novel 8-alkenyl, alkynyl, allenyl and cycloalkyl-quinolinecarboxylic acids are described as antibacterial agents as well as methods of manufacture including novel intermediates used in said manufacture.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: May 26, 1992
    Assignee: Warner-Lambert Company
    Inventors: John M. Domagala, Mark J. Suto, William R. Turner
  • Patent number: 5107053
    Abstract: A ruthenium phosphine complex having catalytic, hydrogenation activity is disclosed. The catalyst as the formula ##STR1## wherein R and R' are the same or different and are C.sub.1 to C.sub.6 linear or branched alkyl; R" is hydrogen or C.sub.1 to C.sub.6 linear or branched alkyl; R.sub.1 is C.sub.1 to C.sub.6 linear or branched alkyl; and n is an integer from 1 to 6.The phosphine complex is particularly useful in the asymmetric hydrogenation of unsaturated carboxylic acids or alkyl esters thereof.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: April 21, 1992
    Assignee: Ethyl Corporation
    Inventor: Tse-Chong Wu
  • Patent number: 5089653
    Abstract: Substituted 2-haloanilines are prepared from the correspondingly substituted 2,4-dichloro- or 2,4-dibromoanilines by selectively reducing a chloro or bromo substituent para to a protected amino group in the presence of the same halogen as an ortho substituent. The selective reductions are accomplished by protecting the amino function of the aniline with two protecting groups, e.g., as the diacetanilide or the succinimide.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: February 18, 1992
    Assignee: Dow Elanco
    Inventors: R. Garth Pews, Richard M. Wehmeyer, James E. Hunter
  • Patent number: 5084592
    Abstract: Azulenesquaric acid dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each have specified meanings are prepared from azulene derivatives of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each have specified meanings as intermediates, and used in an optical recording medium.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: January 28, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Schrott, Peter Neumann, Sibylle Brosius, Helmut Barzynski, Klaus D. Schomann, Harald Kuppelmaier
  • Patent number: 5079245
    Abstract: The compounds 2-trifluoromethyl-7-substituted-6,7,8,9-tetrahydro-[5H]-benzocycloheptenes are disclosed and disclosed to be useful in the treatment of metabolic illnesses such as diabetes, obesity, and their complications. A perferred compound is 2-trifluoromethyl-7-amino-6,7,8,9-tetrahydro-[5H-benzocycloheptane.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: January 7, 1992
    Assignee: Adir et Compagnie
    Inventors: Michel Wierzbicki, Pierre Hugon, Jacques Duhault, Francoise Lacour
  • Patent number: 5068392
    Abstract: 2-Chloro and 2,6-dichloroanilines, optionally substituted in the 3-, 5-, and/or 6-position are prepared from the corresponding anilides by selective bromination, chlorination, reduction and hydrolysis. The selectivity of the process for introducing chlorines ortho to the amino group is very high.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: November 26, 1991
    Assignee: DowElanco
    Inventors: Lennon H. McKendry, Mark W. Zettler
  • Patent number: 5047538
    Abstract: Novel 8-alkenyl, alkynyl, allenyl and cycloalkyl-quinolinecarboxylic acids are described as antibacterial agents as well as methods of manufacture including novel intermediates used in said manufacture.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: September 10, 1991
    Assignee: Warner-Lambert Company
    Inventors: John M. Domagala, Mark J. Suto, William R. Turner
  • Patent number: 5043006
    Abstract: A benzamide derivative of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl, and R is hydroxyl, C.sub.1 -C.sub.6 alkoxy, alkenylalkoxy, alkoxyalkoxy, amino, C.sub.1 -C.sub.4 monoalkylamino, monoalkenylamino, dialkylamino or O-cat wherein cat is a metal, ammonium or an organic cation.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: August 27, 1991
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Hiroyuki Iguchi, Kaoru Kasahara, Shinichi Matsuno, Norimasa Yokoyama, Takeo Motegi
  • Patent number: 5041672
    Abstract: A process for producing p-phenylenediamine or a derivative thereof which comprises reducing p-nitroaniline or a derivative thereof by hydrazine in the presence of an aromatic quinone compound or an aromatic dihydroxy compound.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: August 20, 1991
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventor: Tsukasa Ishikura
  • Patent number: 5041608
    Abstract: A dye composition for keratinous fibers comprising a specific type of trifluoromethylated aniline derivative, as a developer, and a coupling substance is disclosed. The composition provides high degree of saturation and vividness of colors as well as good fastness. Dyeing with the use of the dye composition ensures a variety of developer-coupling agent combinations, which can provide a wide variety of colors with a high degree of color saturation and vividness. The color produced possesses excellent light resistance, washing resistance, and wear resistance. Amoung the trifluoromethylated aniline derivative, used as a developer, a p-phenylenediamine-type trifluoromethylated aniline derivative of the following formula is a novel compound. ##STR1## in which X represents a specific type of mono- or polyhydroxyalkyl group, alkyl group, or other organic group.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: August 20, 1991
    Assignee: Kao Corporation
    Inventors: Tsutomu Mano, Jiro Kawase, Daisuke Misu, Michio Obayashi
  • Patent number: 5041610
    Abstract: Ring-opened resorcyclic acid lactone derivatives of the formla ##STR1## wherein X is ethylene or ethenylene; Y and Z, which may be the same or different, are methylene, hydroxymethylene or carbonyl; R.sub.1 is hydrogen or lower alkyl of from 1 to about 6 carbon atoms; R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, are hydrogen, hydroxyl, halogen, nitro, amino or a radical selected from the group consisting of --R', --OR', --COOR' and --OCOR' wherein R' is lower alkyl of from 1 to about 6 carbon atoms, lower cycloalkyl of from 3 to about 8 carbon atom, alkenyl of from 2 to about 6 carbon atoms, substituted or unsubstituted aryl of from 6 to about 8 carbon atoms, or substituted or unsubstituted aralkyl wherein the alkyl portion contains from 1 to about 6 carbon atoms and the aryl portion contains from 6 to about 8 carbon atoms. These compounds are useful as growth-promotants in food-producing animals.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: August 20, 1991
    Assignee: International Minerals & Chemical Corp.
    Inventor: Keith A. Drengler
  • Patent number: 5013865
    Abstract: An improved process for preparing a compound selected from among 2,4,6-triiodo-5-amino-N-alkylisophthalamic acid, salts thereof, esters thereof, 2,4,6-triiodo-5-amino-isophthalamide, 2,4,6-triiodo-5-amino-N-hydroxyalkyl-isophthalamide and 2,4,6-triiodo-5-amino-N,N'-bishydroxyalkyl-isophthalamide. A substrate selected from among 5-amino-N-alkylisophthalamic acid, salts thereof, esters thereof 5-amino-isophthalamide, 5-amino-N-hydroxyalkyl-isophthalamide and 5-amino-N,N'-bishydroxyalkylisophthalamide is reacted with an iodine halide in an aqueous reaction medium.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: May 7, 1991
    Assignee: Mallinckrodt, Inc.
    Inventors: Gregory D. Cross, Robert C. Chapman
  • Patent number: 4997972
    Abstract: A 2-acylamino-5-halogenated-cinnamic acid derivative represented by the formula (III) which is useful as an intermediate for producing medicines and agricultural chemicals: ##STR1## wherein Ac represents a lower acyl group, R represents a hydrogen atom or a lower alkyl group, and X.sub.1 represents a halogen atom. This derivative is obtained by reacting a compound represented by the formula (I), ##STR2## wherein Ac and X.sub.1 are as defined above, and X.sub.2 represents a bromine or iodine atom, with acrylic acid or its ester represented by the formula (II),CH.sub.2 .dbd.CHCOOR (II)where R is as defined above, in the presence of a palladium catalyst, a tri(unsubstituted- or substituted-phenyl)phosphine and an acid-binding agent.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: March 5, 1991
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Hiroaki Ohno, Daisaku Matsunaga