Carbon Double Bonded Directly At The 1- Or 4- Position Patents (Class 552/304)
  • Patent number: 8884038
    Abstract: The invention provides a method for synthesizing 7-Acetyleno quinone methide compounds that is safe and inexpensive. The method avoids the need for extremely cold reaction temperatures and unlike the prior art does not require any highly explosive materials. The method comprises the steps of: a) performing a condensation reaction between 3,5-di-tert-butyl-4-hydroxybenzaldehyde and a secondary amine thereby forming a secondary amine quinone methide intermediate; b) removing water from the secondary amine quinone methide intermediate by azeotropic distillation; c) adding the dehydrated secondary amine quinone methide intermediate to an organic medium containing a metal acetylide to form a Mannich base intermediate; and d) adding a release agent to the Mannich base intermediate to yield a 7-Acetyleno quinone methide.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 11, 2014
    Assignee: Nalco Company
    Inventor: Jonathan Masere
  • Patent number: 7083883
    Abstract: A polymer has stilbenquinone structures as a repetitive unit and an electrophotographic photoreceptor containing the polymer. More particularly, the polymer has an improved electro-transporting capacity in that precipitation does not occur even when the polymer is used as an electron transporter for an electrophotographic photoreceptor in a high concentration.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: August 1, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Beom-Jun Kim, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee
  • Patent number: 6891072
    Abstract: The present invention provides a method for preparing dimer of a monohydroxy aromatic compound. In the method of the present invention, oxidative coupling reaction of a monohydroxy aromatic compound represented by formula [I]: Ar—OH??[I] wherein Ar represents an optionally substituted aromatic group is carried out in a nitrogen containing polar solvent in the presence of a copper salt. By the method of the instant invention, dimer of the monohydroxy aromatic compound can be obtained in high yield.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 10, 2005
    Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
    Inventors: Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori, Hikari Hirai
  • Publication number: 20040143122
    Abstract: The invention provides Zn-chelating compounds that are molecularly engineered to bind to a specific target sequence in a protein of interest. The Zn2+0 ion is far less toxic and promiscuous than nickel and therefore provides an attractive alternative to Ni-based labeling systems. Invention Zn-chelating compounds also do not require oxidizable thiols and therefore can be used in non-reducing environments such as the surface of living cells. In addition, the target sequence is genetically encodable and requires incorporation of only a few amino acids, unlike fusions to fluorescent proteins such as GFP.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 22, 2004
    Inventors: Roger Y. Tsien, Christina Hauser
  • Publication number: 20040034247
    Abstract: A synergistic composition and method of use are disclosed. The compositions comprise a quinone methide derivative, a hydroxylamine compound and a catechol compound. These compositions demonstrate synergism at inhibiting the polymerization of a vinyl aromatic monomer. Preferably the quinone methide derivative is 2,6-di-tert-butyl-4-benzylidene-cyclo-2,5-dienone, the hydroxylamine compound is N,N-bis(hydroxypropyl)hydroxylamine, and the catechol is 4-tert-butyl catechol.
    Type: Application
    Filed: August 16, 2002
    Publication date: February 19, 2004
    Inventor: Sherif Eldin
  • Patent number: 6280893
    Abstract: Electrophotographic photoreceptors for use in photocopiers and laser printers, among other things, possessing high electron mobility and superior photosensitivity properties. The photoreceptors of the invention utilize a photosensitive layer with a carrier transport material containing a compound which exhibits high molecular vibration. The compounds of the invention are electron transfer agents which can be dispersed in a photosensitive layer at a high concentration and can be molecularly designed to have a desired magnitude of molecular vibration.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: August 28, 2001
    Assignees: Shindengen Electric Manufacturing Co., Ltd., Yamanashi Electronics Co., Ltd.
    Inventors: Mitsuyo Takano, Hiroki Suzuki
  • Patent number: 5863688
    Abstract: The present invention provides a naphthoquinone derivative represented by the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are as defined in the specification. An electrophotosensitive material containing this naphthoquinone derivative as an electron transferring material has high sensitivity.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: January 26, 1999
    Assignee: Mita Industrial Co., Ltd
    Inventors: Yukimasa Watanabe, Sakae Saito, Hirofumi Kawaguchi, Akiyoshi Urano, Fumio Sugai, Atsushi Fujii, Yasufumi Mizuta, Toshiyuki Fukami, Ichiro Yamazato, Yuji Tanaka, Eiichi Miyamoto, Hideo Nakamori, Mitsuo Ihara
  • Patent number: 5466839
    Abstract: p-Dihydroxylated aromatic compounds are prepared via the oxidation of p-fuchsones, the latter advantageously being synthesized by reacting a phenolic compound having at least one hydrogen atom in the para-position to the hydroxyl function with a non-enolizable ketonic compound, in the presence of a catalytically effective amount of an acid catalyst and, optionally, a cocatalytically effective amount of an ionizable sulfur-containing compound.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: November 14, 1995
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Costantini, Daniel Manaut, Daniel Michelet
  • Patent number: 5374749
    Abstract: Disclosed are a dye having a structural formula (I): ##STR1## where n is form 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes, cosmetics and food additives.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: December 20, 1994
    Assignee: Kabushikikaisha Kibun Shokuhin
    Inventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi
  • Patent number: 5372996
    Abstract: A method of treatment of androgen-related diseases such as prostate cancer in susceptible male animals, including humans, comprises administering novel antiandrogens and/or novel sex steroid biosynthesis inhibitors as part of a combination therapy. Sex steroid biosynthesis inhibitors, especially those capable of inhibiting conversion of dehydroepiandrosterone (DHEA) or 4-androstenedione (.DELTA..sup.4 -dione) to natural sex steroida (and testosterone into dihydrotestosterone) in peripheral tissues, are used in combination with antiandrogens usually after blockade of testicular hormonal secretions. Antiestrogens can also be part of the combination therapy. Pharmaceutical compositions and two, three, four and five component kits are useful for such combination treatment.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: December 13, 1994
    Assignee: Endorecherche, Inc.
    Inventor: Fernand Labrie
  • Patent number: 5328819
    Abstract: An azomethine dye represented by the following general formula (I) ##STR1## wherein A represents a dye residue formed by removing one hydrogen atom from an indophenol or indoaniline dye; L represents a divalent bonding group; and Z represents a non-metallic atomic group required for forming a three-membered to eight-membered heterocyclic ring together with N, provided that a carbonyl group is not directly bonded to N in the heterocyclic ring. Also disclosed is a silver halide photographic material having an emulsion layer with a covering power of at least 60, and wherein the silver halide photographic material contains at least one member of the dyes of general formula (I) in such an amount that an increase in transmission density in unexposed areas caused by the incorporation of the dye therein after development is not more than 0.06.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: July 12, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Yukio Miyaki, Shigeru Yamazaki
  • Patent number: 5283347
    Abstract: Disclosed is a dye having a structural formula (I): ##STR1## where n is from 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes cosmetics and food additives.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: February 1, 1994
    Assignee: Kabushikikaisha Kibun
    Inventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi
  • Patent number: 5176976
    Abstract: An organic electronic material comprises a compound represented by the following formula (I). ##STR1## The compounds transport electrons and is excellent in durability when used in a photosensitive layer of an electrophotographic photosensitive member.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: January 5, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama
  • Patent number: 5130356
    Abstract: A novel, optically transparent, isotropic molding for optical purposes which is free of orientation birefringence consists of a mixture of polyphenylene ethers, vinylaromatic polymers and additives. The novel molding contains traces of novel diphenoquinone and/or diphenohydroquinone derivatives as additives and may also contain novel ammonium salts of sulfuric acid half esters of diphenohydroquinones as further additives. The novel molding has a yellowness index (YI) of from 40 to 90. It can be produced in a simple manner by injection molding processes. The novel molding in the form of a circular disk having a central hole is very useful as a dimensionally stable substrate of audio compact disks (CD), audiovisual compact disks (CDV), laser-optical computer disks and magneto-optical computer disks, and data media of this type which contain these novel dimensionally stable substrates have particularly advantageous performance characteristics.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: July 14, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Feuerherd, Carola Hedtmann-Rein, Ludger Leber
  • Patent number: 5095130
    Abstract: A compound of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or ethyl, the A,B,C and D rings optionally containing at least one double bond and optionally substituted with at least one member of the group consisting of optionally protected --OH, .dbd.O, alkyl and alkoxy of 1 to 4 carbon atoms, halogen and alkenyl and alkynyl of 2 to 4 carbon atoms, R is selected from the group consisting of halogen, --OH, alkylthio and alkoxy of 1 to 6 carbon atoms, aralkoxy, arylthio and aralkylthio of 7 to 15 carbon atoms and ##STR2## R.sub.3 and R.sub.4 are individually hydrogen, or alkyl of 1 to 6 carbon atoms or aralkyl of 7 to 15 carbon atoms or taken together with the nitrogen form a heterocycle optionally containing another nitrogen or oxygen atom, excepting the product in which R is methoxy, R.sub.1 and R.sub.2 each represent methyl, A ring carries a 3.beta.-acetoxy function and B ring contains a double bond in 5(6) useful as intermediates for the preparation of 20-keto-pregnanes.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: March 10, 1992
    Assignee: Roussel Uclaf
    Inventors: Michel Vivat, Jean Buendia
  • Patent number: 5013857
    Abstract: Process for the preparation of sulpho-free triphenylmethane dyestuffs of the formula ##STR1## in which R.sup.1 -R.sup.3 denote hydrogen, C.sub.1 -C.sub.6 -alkyl, preferably methyl, or halogen, preferably chlorine,Y denotes hydrogen or NX.sup.5 X.sup.6,X.sup.1 -X.sup.6 denote hydrogen, C.sub.1 -C.sub.6 -alkyl, preferably methyl, ethyl, benzyl or phenyl andZ.sup.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: May 7, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Roderich Raue
  • Patent number: 5011956
    Abstract: Colloidal suspensions of charged polymer particles containing charged metal complexes are prepared from charged polymer colloids by ion exchange. The charged polymer latex particles containing the metal complex are characterized as ranging from about 0.01 to 1.5 micrometers in diameter and containing from about 0.01 to 3.0 millimoles of metal complex per gram of dry polymer and are useful for catalysis of chemical reactions in aqueous dispersions.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: April 30, 1991
    Inventors: Warren T. Ford, Rama S. Chandran, Mahmoud Hassanein, Hayrettin Turk
  • Patent number: 4915875
    Abstract: Paramethyl-substituted hindered phenols are selectively oxidized by contacting with an oxidizing agent at elevated temperatures in the presence of a heterogeneous oxidative coupling catalyst. In the absence of an optional nucleophile the products comprise carbon-carbon oxidative coupling products. In the presence of a nucleophile, addition products result that may be further oxidized by continued exposure to the oxidizing agent to yield substituted p-hydroxybenzaldehydes.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: April 10, 1990
    Assignee: The Dow Chemical Company
    Inventors: Timothy R. Diephouse, Robert M. Strom
  • Patent number: 4909966
    Abstract: New chemical compounds are derivatives of certain substituted 1,4-napthoquinones in which the keto oxygens at the 4-positions have been replaced by certain cyanoalkoxycarbonylmethylene groups. The new compounds have the structure ##STR1## wherein: J is alkyl having 1 to 6 carbon atoms, andR is normal alkyl having 1 to 6 carbon atoms.The compounds are useful as electron-transport agents in electrophotographic elements.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: March 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Teh-Ming Kung, William B. Vreeland, Ralph H. Young