Benzene Ring Containing Patents (Class 568/705)
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Patent number: 11623913Abstract: Disclosed is a method of synthesizing a (1R,2R)-nitroalcohol compound of formula (I), as shown in the following reaction scheme, including: subjecting a compound of formula (II) and a compound of formula (III) to a condensation reaction in an organic solvent in the presence of a copper complex generated in situ from a chiral (1S,2R)-amino alcohol ligand and a cupric salt to produce the (1R,2R)-nitroalcohol compound of formula (I), where R1 and R2 are defined in the same manner as that in the specification. The method involves mild reaction conditions, excellent diastereoselectivity and high chemical yield, and thus it is suitable for industrial applications.Type: GrantFiled: March 25, 2020Date of Patent: April 11, 2023Assignee: Sichuan UniversityInventors: Fener Chen, Lin Dong, Yingqi Xia, Pei Tang, Youcai Xiao
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Patent number: 9376323Abstract: An object of the invention is to provide a tetrafluoroborate producing method that allows high-yield, high-efficiency production of a tetrafluoroborate by a continuous process, a tetrafluoroborate-containing electrolyte, and an electrical storage device including such an electrolyte. The invention provides a method for producing a tetrafluoroborate, which includes: a first step including dissolving boron trifluoride gas in an organic solvent; a second step including adding, to the organic solvent, a fluoride (MFn, wherein M represents a metal or NH4, and 1?n?3) in an amount stoichiometrically equivalent to or less than the amount of the boron trifluoride so that a tetrafluoroborate solution is produced; and a third step including circulating the tetrafluoroborate solution through the first step so that the boron trifluoride gas is dissolved in the tetrafluoroborate solution instead of the organic solvent.Type: GrantFiled: June 19, 2009Date of Patent: June 28, 2016Assignee: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Kazuhiro Miyamoto, Kazutaka Hirano
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Publication number: 20140323727Abstract: Provided herein is a novel process for the preparation of phenylcyclopropylamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein is a novel, commercially viable and industrially advantageous process for the preparation of a substantially pure ticagrelor intermediate, trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine. The intermediate is useful for preparing ticagrelor, or a pharmaceutically acceptable salt thereof, in high yield and purity.Type: ApplicationFiled: July 1, 2014Publication date: October 30, 2014Inventors: Anil Shahaji Khile, Jayesh Patel, Nikhil Trivedi, Nitin Sharadchandra Pradhan
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Patent number: 8802704Abstract: The invention relates to oxadiazole compounds of formula I. The compounds are useful e.g. in the treatment of autoimmune disorders, such as multiple sclerosis.Type: GrantFiled: March 29, 2010Date of Patent: August 12, 2014Assignee: Merck Serono SAInventors: Anna Quattropani, Cyril Montagne, Wolfgang Sauer, Stefano Crosignani, Agnès Bombrun
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Publication number: 20140051874Abstract: The present invention provides a method that allows production of stereospecific and asymmetrical five-membered ring-containing compounds serving as synthetic intermediates for formation of five-membered rings of prostaglandins and the like, with high yield and excellent stereoselectivity in terms of diastereoselectivity and enantioselectivity in a short process without requiring troublesome procedures such as optical resolution.Type: ApplicationFiled: April 27, 2012Publication date: February 20, 2014Applicant: ONO PHARMACEUTICAL CO., LTD.Inventor: Yujiro Hayashi
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Publication number: 20130150577Abstract: Provided herein is a novel process for the preparation of phenylcyclopropylamine derivatives, which are useful intermediates in the preparation of triazolo[4,5-d]pyrimidine compounds. Provided particularly herein is a novel, commercially viable and industrially advantageous process for the preparation of a substantially pure ticagrelor intermediate, trans-(1R,2S)-2-(3,4-difluorophenyl)-cyclopropylamine. The intermediate is useful for preparing ticagrelor, or a pharmaceutically acceptable salt thereof, in high yield and purity.Type: ApplicationFiled: April 19, 2011Publication date: June 13, 2013Applicant: ACTAVIS GROUP PTC EHFInventors: Anil Shahaji Khile, Jayesh Patel, Nikhil Trivedi, Nitin Sharadchandra Pradhan
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Publication number: 20120151830Abstract: Disclosed are polyisobutenyl alcohols and substituted polyisobuentyl alcohols of the formula: wherein n is an integer from 5 to 90, R is selected from the group consisting of hydrogen, haloalkyl, alkoxycarbonyl and substituted aryl wherein at least one substituent group of the substituted aryl is selected from cyano, nitro and alkoxycarbonyl.Type: ApplicationFiled: December 15, 2010Publication date: June 21, 2012Inventors: RICHARD E. CHERPECK, RUTH SMOCHA
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Publication number: 20120142934Abstract: A method for synthesis of secondary alcohols is provided for pharmaceutical secondary alcohol by addition of organoboronic acids with aldehydes in presence of the cobalt ion and bidentate ligands as the catalyst. In addition, an enantioselective synthesis method for secondary alcohols is also herein provided in the present invention. The present invention has advantages in using less expensive cobalt ion and commercially available chiral ligands as the catalyst, wide scope of organoboronic acids and aldehydes compatible with this catalytic reaction and achieving excellent yields and/or enantiomeric excess.Type: ApplicationFiled: March 10, 2011Publication date: June 7, 2012Inventors: Chien-Hong CHENG, Jaganathan Karthikeyan, Pang-Chi Huang
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Publication number: 20120035226Abstract: The invention relates to oxadiazole compounds of formula I. The compounds are useful e.g. in the treatment of autoimmune disorders, such as multiple sclerosis.Type: ApplicationFiled: March 29, 2010Publication date: February 9, 2012Applicant: MERCK SERONO SAInventors: Anna Quattropani, Cyril Montagne, Wolfgang Sauer, Stefano Crosignani, Agnés Bombrun
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Patent number: 8071824Abstract: The present invention relates to a process for preparing alkenylnitrobenzenes and alkylanilines, which are of significance as intermediates for fungicidally active alkylanilides.Type: GrantFiled: July 12, 2007Date of Patent: December 6, 2011Assignee: Bayer CropScience AGInventors: Alexander Straub, Jörg Nico Greul, Norbert Lui
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Publication number: 20110243865Abstract: Disclosed is a melanin production inhibitor which has an excellent inhibitory activity on the production of melanin and is highly safe. The melanin production inhibitor comprises a compound represented by general formula (1) (excluding clotrimazole), and/or a pharmacologically acceptable salt thereof.Type: ApplicationFiled: December 22, 2009Publication date: October 6, 2011Applicant: POLA CHEMICAL INDUSTRIES INC.Inventors: Kouji Yokoyama, Makoto Kimura, Masashi Tamai, Yuko Saitoh, Tomomi Kato, Yu Ikeda
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Patent number: 7906684Abstract: The present invention relates to the use of compounds of the formula (I) where R stands for [lacuna] with radicals defined in the description, as antioxidants, to corresponding novel compounds and compositions, and to corresponding processes for the preparation of compounds and compositions.Type: GrantFiled: April 5, 2007Date of Patent: March 15, 2011Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Thomas Rudolph, Herwig Buchholz
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Publication number: 20100292458Abstract: The present invention discloses novel and improved nucleosidic and nucleotidic compounds that are useful in the light-directed synthesis of oligonucleotides, as well as, methods and reagents for their preparation. These compounds are characterized by novel photolabile protective groups that are attached to either the 5?- or the 3?-hydroxyl group of a nucleoside moiety. The photolabile protective group is comprised of a 2-(2-nitrophenyl)-ethyoxycarbonyl skeleton with at least one substituent on the aromatic ring that is either an aryl, an aroyl, a heteroaryl or an alkoxycarbonyl group. The present invention includes the use of the aforementioned compounds in light-directed oligonucleotide synthesis, the respective assembly of nucleic acid microarrays and their application.Type: ApplicationFiled: June 2, 2010Publication date: November 18, 2010Applicant: NIGU Chemie GmbHInventors: Sigrid BÜHLER, Markus Ott, Wolfgang Pfleiderer
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Patent number: 7745664Abstract: A process for preparing venlafaxine in a high yield as well as processes for producing venlafaxine hydrochloride of form I having a very high polymorphic purity are described.Type: GrantFiled: December 10, 2004Date of Patent: June 29, 2010Assignee: KRKA Tovarno Zdravil, d.d. Novo MestoInventor: Silvo Zupancic
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Publication number: 20100121020Abstract: The invention provides 3,3?-diamino-5,5?-diphenyl-4,4?-biphenyldiol which is useful as a monomer for a high-performance polymer, particularly a polymer satisfying performances highly required in the semiconductor field such as polybenzoxazole, polyimide or the like and 3,3?-dinitro-5,5?-diphenyl-4,4?-biphenyldiol as a raw material thereof. Also, the invention provides a polybenzoxazole having a repeating unit represented by the following formula (1): (wherein R is a bivalent dicarboxylic acid residue).Type: ApplicationFiled: March 18, 2008Publication date: May 13, 2010Applicant: NIPPONKAYAKU KABUSHIKIKAISHAInventors: Kenji Kunikata, Taihei Koumoto, Kenji Sekine
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Publication number: 20100075999Abstract: The invention relates to a process for the preparation of anagrelide, and for the preparation of intermediates for use in preparing anagrelide. The invention also relates to the intermediates per se, in particular compounds of Formula (V): where R constitutes a suitable leaving group, which may not be hydrogen. The R group may be selected from: (i) —SiR13, (ii) —CH2Ar, (iii) —COOR2, and (iv) sulfonates such as —SO2R3.Type: ApplicationFiled: February 6, 2008Publication date: March 25, 2010Applicant: CIPLA LIMITEDInventors: Srinivas Laxminarayan Pathi, Rajendra Narayanrao Kankan, Dharmaraj Ramachandra Rao
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Patent number: 7678792Abstract: The invention provides compounds and pharmaceutical compositions thereof, which are useful as protein kinase inhibitors, as well as methods for using such compounds to treat, ameliorate or prevent a condition associated with abnormal or deregulated kinase activity. In some embodiments, the invention provides methods for using such compounds to treat, ameliorate or prevent diseases or disorders that involve abnormal activation of c-kit, PDGFR?, PDGFR?, CSF1R, Abl, BCR-Abl, CSK, JNK1, JNK2, p38, p70S6K, TGF?, SRC, EGFR, trkB, FGFR3, FLT3, Fes, Lck, Syk, RAF, MKK4, MKK6, SAPK2?, BRK, KDR, c-raf or b-raf kinase, or mutant forms thereof.Type: GrantFiled: October 16, 2007Date of Patent: March 16, 2010Assignee: IRM LLCInventors: Donatella Chianelli, Christopher Cow, Yun He, Songchun Jiang, Xiaolin Li, Xiaodong Liu, Zuosheng Liu, Jon Loren, Valentina Molteni, Juliet Nabakka, Pingda Ren, Taebo Sim, Xiaodong Wang, Shuli You
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Patent number: 7432399Abstract: A polyol monomer comprising the formula: R1 and R3 are —H, aliphatic, aromatic, or ether; R2 is aliphatic, aromatic, ester, ether, or acrylic, and R1 contains a hydroxyl group, R3 contains a hydroxyl group, R2 contains —O—CH2—CH(OH)—, or any combination thereof. The polyol monomer may be made by reacting an epoxy and an amine. Either the epoxy contains more than one epoxide groups, the amine contains a hydroxyl group, or both. A thermoset made by reacting the polyol monomer with a polyisocyanate.Type: GrantFiled: November 2, 2004Date of Patent: October 7, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Jozef Verborgt, Arthur Anthony Webb
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Publication number: 20080177110Abstract: Provides are intermediates and processes for preparation of o-desmethylvenlafaxine.Type: ApplicationFiled: July 26, 2007Publication date: July 24, 2008Inventors: Valerie Niddam-Hildesheim, Tamar Nidam
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Patent number: 7183443Abstract: Process for the preparation of enantiomerically enriched amino aldehydes and amino alcohols, wherein a corresponding enantiomerically enriched amino nitrile is subjected to hydrogenation in the presence of hydrogen, a hydrogenation catalyst, preferably a Pd-catalyst and a mineral acid. For the preparation of an amino aldehyde hydrogen preferably is present at a hydrogen-pressure between 0.1 and 2 MPa, in particular between 0.5 and 1 MPa. The amino aldehyde preferably is isolated in the form of a chemically and configurationally stable derivative. For the preparation of an amino alcohol, preferably at least during part of the hydrogenation hydrogen is present at a hydrogen-pressure between 2 and 10 MPa, in particular between 4 and 6 MPa. In a preferred embodiment the hydrogen-pressure initially is between 0.5 and 2 MPa and subsequently, after most of the nitrile starting material is converted, the hydrogen pressure is increased to a value between 2 and 10 MPa.Type: GrantFiled: April 7, 2003Date of Patent: February 27, 2007Assignee: DSM IP Assets B.V.Inventors: Bernardus Henricus Nicolaas Dassen, Bernardus Kaptein, Quirinus Bernardus Broxterman
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Patent number: 7166337Abstract: The present invention relates to liquid-crystal mixtures having specific resistance values, comprising acidic compounds. The present invention furthermore relates to liquid-crystal displays containing these liquid-crystal mixtures. The invention furthermore relates to compounds of the formula I, in which the parameters are as defined in the text, to their preparation, and to their use for achieving certain specific resistance values in liquid-crystal mixtures. The application also relates to a method of adjusting the specific resistance of liquid-crystal mixtures using acidic compounds.Type: GrantFiled: July 19, 2001Date of Patent: January 23, 2007Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Michael Darius, Volker Reiffenrath, Kazuaki Tarumi, Bernhard Rieger, Michael Heckmeier, Marcus Reuter, Peer Kirsch
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Patent number: 7091292Abstract: Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands, and methods of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalysts have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.Type: GrantFiled: April 28, 2005Date of Patent: August 15, 2006Assignee: Symyx Technologies, Inc.Inventors: Thomas Boussie, Oliver Bruemmer, Gary M. Diamond, Anne M. LaPointe, Margarete K. Leclerc, Cynthia Micklatcher, Pu Sun, Xiaohong Bei
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Patent number: 6977315Abstract: The present invention relates to a process for producing optically active ?-nitroalcohols wherein nitroaldol reactions of aldehydes and nitroalkanes are carried out in the presence of a base and an optically active metal complex catalyst represented by the following formula (c): (where R4, R5, and R6 represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acyl group, an alkoxycarbonyl group, or an aryloxycarbonyl group, and R5 and R6 may be linked together to form a ring; X* represents a hydrocarbon group having an asymmetric carbon atom or axial asymmetry; M represents a cobalt ion or a chromium ion; and Y represents an anion capable of forming a salt when the valence of M is larger than that of a ligand).Type: GrantFiled: November 2, 2004Date of Patent: December 20, 2005Assignee: Mitsui Chemicals, Inc.Inventors: Tohru Yamada, Taketo Ikeno
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Patent number: 6943257Abstract: The present invention provides a process for preparing an aromatic bromide or aromatic iodide from an aromatic amine derivative using nitrite anion and halodimethylsulfonium halide generated in situ from hydrobromic acid/DMSO or hydriodic acid/DMSO. The process for producing compounds of the formula (1) is disclosed (1) wherein X is bromine or iodine: Y is carbon or nitrogen; R1, R2, R3, R4 and R5 which may be the same or different and are selected independently from the group consisting of a hydrogen, a hologen, a C1-C8 alkyl, a C1-C10 alkoxy, a nitro, a formyl, an aryl, a benzyl, a C2-C10 alkylcarbonyl and an arylcarbonyl, provided that adjacent groups as selected from R1, R2, R3, R4 and R5 may combine to form a ring.Type: GrantFiled: September 21, 2001Date of Patent: September 13, 2005Inventors: Woon Phil Baik, Jung Min Kim, Young Sam Kim, Cheol Hun Yoon, Shin Jong Kim, Seok Woo Lee
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Patent number: 6924400Abstract: The invention relates, as novel and useful industrial products, to triaromatic compounds, which are vitamin D analogues, of general formula (I): and also to a method for preparing them and to their use in pharmaceutical compositions intended for use in human or veterinary medicine, or alternatively in cosmetic compositions.Type: GrantFiled: December 10, 2002Date of Patent: August 2, 2005Assignee: Galderma Research & Development, SNCInventors: Jean-Michel Bernardon, Thibaud Biadatti
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Patent number: 6849767Abstract: A method of hydroborating an alkene or alkyne, or reducing an organic functionality, oxidizing primary and secondary alcohols using a fluorous borane-sulfide is disclosed. The method includes regeneration and recycling the fluorous borane-sulfide.Type: GrantFiled: July 24, 2003Date of Patent: February 1, 2005Assignee: The Board of Trustees of the University of IllinoisInventors: David C. Crich, Santhosh Neelamkavil
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Patent number: 6815443Abstract: The invention relates to 5-amino-1-pentene-3-ol substituted derivatives, a method for the production thereof, medicaments containing said compounds, the use of substituted 5-amino-1-pentene-3-ol derivatives for the production of medicaments, and methods of treatment using the medicaments.Type: GrantFiled: March 31, 2003Date of Patent: November 9, 2004Assignee: Gruenenthal GmbHInventors: Helmut Buschmann, Corinna Maul, Bernd Sundermann, Utz-Peter Jagusch, Michael Haurand, Boris Chizh
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Publication number: 20040214887Abstract: The present invention relates to novel dihydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such as, but not limited to aging, Alzheimer's Disease, cancer, cardiovascular disease, diabetic nephropathy, diabetic retinopathy, a disorder of glucose metabolism, dyslipidemia, dyslipoproteinemia, hypertension, impotence, inflammation, insulin resistance, lipid elimination in bile, obesity, oxysterol elimination in bile, pancreatitis, Parkinson's disease, a peroxisome proliferator activated receptor-associated disorder, phospholipid elimination in bile, renal disease, septicemia, metabolic syndrome disorders (e.g., Syndrome X), thrombotic disorder. Compounds and methods of the invention can also be used to modulate C reactive protein or enhance bile production in a patient.Type: ApplicationFiled: December 23, 2003Publication date: October 28, 2004Inventors: Jean-Louis Henri Dasseux, Carmen Daniela Oniciu
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Publication number: 20030225289Abstract: A process for the preparation of tricyclic amino alcohol derivatives including 2-[N-[2-(9H-carbazol-2-yloxy)ethyl]]amino-1-[(3-methylsulfonylamino)phenyl]ethanol useful in the treatment of diabetes, obesity, hyperlipidemia and so on; and intermediates as represented by formula (5) or (6) or the like useful in the preparation, wherein R11 is hydrogen or the like; and *1 represents an asymmetric carbon atom. 2-Halo-1-(3-nitrophenyl)ethanone derivatives and 1-(3-nitrophenyl)oxirane derivatives, which are intermediates for the preparation of tricyclic amino alcohol derivatives, are easy of purification, and particularly optically active 1-(3-nitrophenyl)oxirane derivatives are effective in enhancing the optical purities of the final products.Type: ApplicationFiled: June 11, 2003Publication date: December 4, 2003Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koki Matsubara, Naoyuki Ishii, Masami Ogawa
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Patent number: 6610889Abstract: Methods and compositions are provided for the direct catalytic asymmetric aldol reaction of aldehydes with donor molecules selected from ketones and nitroalkyl compounds. The reactions employ as catalyst a Group 2A or Group 2B metal complex of a ligand of formula I, as defined further herein.Type: GrantFiled: October 31, 2001Date of Patent: August 26, 2003Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Barry M. Trost, Hisanaka Ito
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Publication number: 20020193447Abstract: Optically active 1-substituted phenyl-2-nitro alcohol derivatives having the formula (1) 1Type: ApplicationFiled: July 5, 2002Publication date: December 19, 2002Inventors: Masakatsu Shibasaki, Hiroaki Sasai, Yasuo Urata, Mamoru Fujita
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Patent number: 6476277Abstract: The present invention relates to a process for preparing hydroxyaromatics by oxidizing aromatics with dinitrogen monoxide in the gas phase in the presence of nanocrystalline zeolites.Type: GrantFiled: July 24, 2001Date of Patent: November 5, 2002Assignee: Bayer AktiengesellschafterInventors: Bernd Vogel, Elias Klemm, Mathias Seitz, Jochen Heller, Jörg Reiser
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Patent number: 6462241Abstract: A process for preparing a compound having PGD2 antagonism represented by the formula (I), or a pharmaceutically acceptable salt or hydrate thereof, which process comprises reacting an amino alcohol of the formula (II) or its salt with a compound of the formula (III) or its reactive derivative, oxidizing the product with halo oxoacid in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyls, reacting the product with an ylide under the conditions for Wittig reaction, and optionally deprotecting the product.Type: GrantFiled: April 29, 2002Date of Patent: October 8, 2002Assignee: Shionogi & Co., Ltd.Inventors: Tetsuo Okada, Makoto Kakinuma
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Patent number: 6455741Abstract: A process for preparing a compound having PGD2 antagonism represented by the formula (I), or a pharmaceutically acceptable salt or hydrate thereof, which process comprises reacting an amino alcohol of the formula (II) or its salt with a compound of the formula (III) or its reactive derivative, oxidizing the product with halo oxoacid in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyls, reacting the product with an ylide under the conditions for Wittig reaction, and optionally deprotecting the product.Type: GrantFiled: April 29, 2002Date of Patent: September 24, 2002Assignee: Shionogi & Co., Ltd.Inventors: Tetsuo Okada, Makoto Kakinuma
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Patent number: 6310060Abstract: Phenylamino benzoic acid, benzamides, and benzyl alcohol derivatives of the formula where R1, R2, R3, R4, R5, and R6 are hydrogen or substituent groups such as alkyl, and where R7 is hydrogen or an organic radical, and Z is COOR7, tetrazolyl, CONR6R7, or CH2OR7, are potent inhibitors of MEK and, as such, are effective in treating cancer and other proliferative diseases such as inflammation, psoriasis and restenosis, as well as stroke, heart failure, and immunodeficiency disorders.Type: GrantFiled: January 5, 2000Date of Patent: October 30, 2001Assignee: Warner-Lambert CompanyInventors: Stephen Douglas Barrett, Alexander James Bridges, Donna Reynolds Cody, Annette Marian Doherty, David Thomas Dudley, Alan Robert Saltiel, Mel Conrad Schroeder, Haile Tecle
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Patent number: 6288242Abstract: The invention relates to processes for preparing a compound of the formula and the enantiomer of said compound, wherein the benzoic acid moiety is attached at position 6 or 7 of the chroman ring, and R1, R2, and R3 are as defined herein. The invention further relates to intermediates that are useful in the preparation of the compound of formula X above.Type: GrantFiled: February 23, 2000Date of Patent: September 11, 2001Assignee: Pfizer Inc.Inventors: Anthony Piscopio, Joel M. Hawkins, Stephanie Caron, Sarah E. Kelly, Jeffrey W. Raggon, Michael J. Castaldi, Robert W. Dugger, Sally G. Ruggeri
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Patent number: 6255522Abstract: The present invention has its objects to provide a method for reducing &agr;-aminoketone derivatives under mild conditions with high stereoselectivity.Type: GrantFiled: September 29, 1999Date of Patent: July 3, 2001Assignee: Kaneka CorporationInventors: Kazuhiko Matsuo, Shingo Matsumoto, Kenji Inoue
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Patent number: 6207865Abstract: A carbonyl compound or a mixture of two or more carbonyl compounds is catalytically hydrogenated in the presence of a Raney copper catalyst in the form of nuggets.Type: GrantFiled: January 11, 2000Date of Patent: March 27, 2001Assignee: BASF AktiengesellschaftInventors: Boris Breitscheidel, Marc Walter, Detlef Kratz, Gerhard Schulz, Manfred Sauerwald
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Patent number: 6147224Abstract: Compounds of Formula 1, Formula 2 or Formula 3 where X is O, S, or (CR.sub.1 R.sub.1).sub.n where n is 0, 1 or 2; Y is a bivalent radical having Formula 4 or Formula 5 where o is an integer from 1 to 4 ##STR1## or Y is a bivalent aryl or 5 or 6 membered heteroaryl radical having 1 to 3 heteroatoms selected from N, S and O, said aryl or heteroaryl groups being unsubstituted, or substituted with 1 to 3 C.sub.1-6 alkyl or with 1 to 3 C.sub.1-6 fluoroalkyl groups; and the remaining symbols have the meaning described in the specification, have RXR selective retinoid agonist-like activity.Type: GrantFiled: October 1, 1998Date of Patent: November 14, 2000Assignee: Allergan Sales, Inc.Inventors: Vidyasagar Vuligonda, Kwok Yin Tsang, Jayasree Vasudevan, Roshantha A. Chandraratna
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Patent number: 6057482Abstract: Benzyl alcohol of high purity is produced by supplying benzyl acetate, water and acetic acid to a hydrolysis reactor packed with a solid acid catalyst. The liquid reaction mixture produced, which contains benzyl acetate, water, benzyl alcohol and acetic acid, is supplied to an acetic acid-water recovery column, Benzyl alcohol and benzyl acetate are recovered while acetic acid is removed and returned to the hydrolysis reactor.Type: GrantFiled: November 9, 1998Date of Patent: May 2, 2000Assignee: Tosoh CorporationInventors: Takashi Okada, Makoto Hanaya, Akitaka Hattori, Takanori Miyake, Nobuo Nagira, Shunya Ikumi, Takashi Hori, Norimasa Mizui
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Patent number: 6037505Abstract: The anantoselective borane reduction of prochiral ketones to optically pure alcohols is effectively achieved by performing the reduction in the precence of catalytic amounts of the new and valuable oxazaborolidine compounds of formulas (I) and (II). The compounds of formulas (I) and (II) may be isolated and purified prior to use in the reduction reactions or the compounds of formulas (I) and (II) may be generated in situ.Type: GrantFiled: April 26, 1999Date of Patent: March 14, 2000Assignee: Pfizer Inc.Inventor: George Joseph Quallich
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Patent number: 5994558Abstract: The invention provides methods for preparing a 2-isoxazoline compound represented by formula (1) and a 2,5-diamino-1,6-diphenyl-3-hydroxyhexane compound obtainable by reducing the 2-isoxazoline compound and represented by formula (6): ##STR1## wherein Ph is phenyl; and each of R.sup.1 and R.sup.2 independently represents hydrogen, acyl, alkyloxycarbonyl, arylalkyloxycarbonyl, aryloxycarbonyl, alkylaminocarbonyl, arylalkylaminocarbonyl, arylaminocarbonyl, alkyl, arylalkyl, aryl, alkylsulfonyl, acylalkylsulfonyl, or arylsulfonyl, or R.sup.1 and R.sup.2 are linked to each other to form divalent acyl. These compounds are useful as intermediates in the synthesis of medicines such as retrovirus protease inhibitors including human immunodeficiency virus (HIV) protease inhibitors.Type: GrantFiled: November 24, 1997Date of Patent: November 30, 1999Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshiyuki Murai, Masahiro Nishikawa, Yoichiro Ueda, Ichiro Takase
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Patent number: 5895824Abstract: In a process for preparing polyether polyols containing aromatics by molecular addition of alkylene oxides to H-functional initiators at from 70.degree. C. to 135.degree. C. and pressures of from 0.1 MPa to 1.0 MPa, the alkoxylation is carried out using at least one initiator comprising at least 95% by weight of 2,3 and 3,4 isomers of tolylenediamine, from 0.5 to 4% by weight of 2,4 and 2,6 isomers of tolylenediamine and from 0.1 to 1.5% by weight of more volatile fractions from tolylenediamine production. The polyether polyols prepared by this process can be used as component of a polyol mixture for producing rigid polyurethane foams.Type: GrantFiled: June 7, 1996Date of Patent: April 20, 1999Assignee: BASF AktiengesellschaftInventors: Stefan Dinsch, Regina Pretzsch, Juergen Winkler, Bernd Guettes, Karl-Heinz Steinchen
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Patent number: 5874654Abstract: Environmentally-polluting nitrocresol values are removed from admixtures of nitroaromatic compounds comprised thereof, notably the media of nitration of aromatic compounds by reacting same with aqueous HNO.sub.3 /H.sub.2 SO.sub.4, by first intimately contacting such nitroaromatic compound admixtures with an oxidizing agent comprising hydrogen peroxide, javelle water, or mixture thereof, and thereafter with a neutralizing agent; the nitroaromatic aromatic compounds thus purified are conveniently catalytically hydrogenated into aromatic amines.Type: GrantFiled: September 19, 1997Date of Patent: February 23, 1999Assignee: Rhone Poulenc ChimieInventors: Antoinette Gacon-Camoz, Pascal Metivier
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Patent number: 5874647Abstract: A zeolite catalyst for hydroxylating benzene to phenol is treated hydrothermally with a gas comprising approximately 1-100 mole percent water at a temperature between approximately 350.degree.-950.degree. C., and subsequently is treated with an acid. This treatment selectively removes aluminum species from the zeolite catalyst in a manner that increases catalyst stability in phenol production without reducing the activity of the catalyst.Type: GrantFiled: August 20, 1996Date of Patent: February 23, 1999Assignee: Solutia Inc.Inventors: William D. McGhee, Patrick P. B. Notte
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Patent number: 5856576Abstract: There are provided aryne intermediates of formula I, useful in the manufacture of herbicidal compounds. ##STR1## Also provided is a method to prepare the formula I intermediates via the palladium catalyzed coupling of an o-halonitrobenzene or o-haloaniline with 3-butyne-1-ol.Type: GrantFiled: January 29, 1998Date of Patent: January 5, 1999Assignee: American Cyanamid CompanyInventors: Philip M. Harrington, Kenneth A. M. Kremer
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Patent number: 5830920Abstract: Compounds of the formula ##STR1## wherein n.sup.1 -n.sup.9 are each independently 0 or 1;m.sup.1 -m.sup.9 are each independently 0 or 1, but with the proviso that at least one of m.sup.1, m.sup.2 and m.sup.3, at least one of m.sup.4, m.sup.5 and m.sup.6 and, when present, at least one of m.sup.7, m.sup.8 and m.sup.9 is 1; and whereinX.sup.1 -X.sup.18 each independently is --O--, --CONR.sup.1,--NR.sup.1 CO-- or --NR.sup.1 --;R.sup.1 is hydrogen or lower alkyl;W is a benzene or s-triazine;Y.sup.1 -Y.sup.9 each independently is an aromatic ring systems;A.sup.1 -A.sup.3 each independently is a residue of a sugar alcohol devoid of the 1-hydroxy group or a derivative thereof, a residue of a sugar acid devoid of the 1-carboxy group or a derivative thereof or tris-(hydroxymethyl)-methyl;D is the di-residue of a sugar alcohol devoid of 2 hydroxy groups or a derivative thereof or the di-residue of a sugar dicarboxylic acid devoid of 2 carboxy group or a derivative thereof;Q.sup.1 -Q.sup.3 and Z.sup.Type: GrantFiled: April 26, 1996Date of Patent: November 3, 1998Assignee: Hoffmann-La Roche Inc.Inventors: Alexander Chucholowski, Jurgen Fingerle, Niggi Iberg, Hans Peter Marki, Rita Muller, Michael Pech, Marianne Rouge, Gerard Schmid, Thomas Tschopp, Hans Peter Wessel
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Patent number: 5750802Abstract: A 1-phenyl-2-nitroalcohol of the formula I ##STR1## having a (1R*,2S*) stereoisomer and a (1R*2R*) stereoisomer is produced by reacting benzaldehyde with a nitroalkane in the presence of an amine catalyst. The resulting 1-phenyl-2-nitroalcohol includes at least 50% of the (1R*,2S*) stereoisomer.Type: GrantFiled: July 31, 1997Date of Patent: May 12, 1998Assignee: Amvac Chemical CorporationInventor: C. Edward Baxter, Jr.
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Patent number: 5600035Abstract: Photoreactive compounds are synthesized from 2,5- or 2,6-dintrobenzyl groups. Also disclosed are methods of synthesizing reactive monomers containing 2,5- or 2,6-dintrobenzyl groups.Type: GrantFiled: July 13, 1994Date of Patent: February 4, 1997Assignee: PPG Industries, Inc.Inventors: Charles F. Kahle, II, Neil D. McMurdie, Raphael O. Kollah, Daniel E. Rardon, Gregory J. McCollum
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Patent number: 5523457Abstract: This invention relates to a retinoid mpound of formula I ##STR1## in which Y is --CO--NH--, --CR.sup.2 .dbd.CR.sup.3 --, --CO--O--, --O--CO--, --C(.dbd.S)--NH--, --C.tbd.C--, --O--CH.sub.2 --, --CH.sub.2 --O--, or --CH.sub.2 --CH.sub.2 --;A is --(CH.sub.2).sub.t -- or a bond;Q is phenyl optionally substituted with one to three same or different C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halogen, or --CO.sub.2 R.sup.4 ;R.sup.1 is --CO.sub.2 Z, --CONHR.sup.5, C.sub.1-6 alkyl, --CH.sub.2 OH, or --CHO;R.sup.2, R.sup.3, R.sup.4, R.sup.5, and Z are independently hydrogen or C.sub.1-6 alkyl;t is one to six.Type: GrantFiled: June 2, 1995Date of Patent: June 4, 1996Assignee: Bristol-Myers Squibb CompanyInventors: John E. Starrett, Jr., Muzammil M. Mansuri, David R. Tortolani