Preparing From Nitrogen Containing Compound Patents (Class 568/767)
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Publication number: 20130053598Abstract: The invention relates to a method for producing a cross-coupling product of a benzenoid dizonium salt according to the general formula (I), wherein the groups R1, R2, R3, R4, and R5 represent hydrogen, halogen, an alkyl, alkenyl, aryl, alkoxy, aryloxy, nitro, cyano, hydroxy, acetyl, and/or diazo groups independently of each, and X represents BF4, Cl, F, SO3CH3, CO2CH3, PF6, ClO2CH3, or CIO4, comprising the following steps: (a) providing a benzenoid amide, which with the exception of the diazo function has the same substituents R1, R2, R3, R4, and R5 as the benzenoid diazonium salt of the general formula (I), and hydrolytically cleaving the amide to form an amine or providing a corresponding amine, (b) diazotizing the amine thus obtained or provided with a nitrite, and (c) subsequently reacting the benzenoid diazonium salt with a coupling partner in the presence of a catalyst to form a cross-coupling product, wherein the coupling parter is represented by the general formula (II), R6, R7, and R8 are the same orType: ApplicationFiled: April 22, 2010Publication date: February 28, 2013Applicant: ZYLUM BETEILIGUNGSGESELLSCHAFT MBH & CO. PATENTE II KGInventors: Nicolas Boege, Andreas Kreipl, Bernd Schmidt, Frank Hoelter, René Berger
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Patent number: 7217840Abstract: The invention concerns a method for method for preparing 1,3,5-triaminobenzene, characterized in that it comprises a step which consists in amination of a compound of formula (I), wherein: A represents a halogen atom or a NH2 group; X1 and X2, identical or different, represent each a halogen atom, the amination step being carried out in the presence of ammonia and a catalyst selected from the group consisting of copper salts, cupric and cuprous oxides or mixtures thereof at a temperature ranging between 150° C. and 250° C.Type: GrantFiled: June 6, 2003Date of Patent: May 15, 2007Assignee: PHV AnalyticInventors: Lhassane Ismaili, Bernard Refouvelet, Alain Xicluna
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Patent number: 7087799Abstract: An object of the present invention is to provide a material which resolves the drawbacks associated with polyimide polymers, and yet retains the advantages offered by conventional polyimide polymers. An amino group containing phenol derivative of the present invention is represented by a general formula (1) show below, and the present invention also provides a polyimide precursor produced using such an amino group containing phenol derivative. (wherein, R1, R2 and R3, which may be the same or different, each represent an alkyl group of 1 to 9 carbon atoms, an alkoxy group of 1 to 10 carbon atoms, a COOR group (in which R represents an alkyl group of 1 to 6 carbon atoms) or a hydrogen atom; R4 and R5, which may be the same or different, each represent an alkyl group of 1 to 9 carbon atoms or a hydrogen atom; X represents —O—, —S—, —SO2—, —C(CH3)2—, —CH2—, —C(CH3)(C2H5)—, or —C(CF3)2—; and n represents an integer of 1 or greater).Type: GrantFiled: January 31, 2003Date of Patent: August 8, 2006Assignee: Gun Ei Chemical Industry Co., Ltd.Inventors: Takeshi Tsuihiji, Michiyasu Yamazaki
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Patent number: 6737236Abstract: This invention discloses a novel method for conjugating macromolecules to other molecular entities. Specifically, this invention discloses a method for conjugating or derivatizing macromolecules, such as oligonucleotides and proteins, using cycloaddition reactions, such as the Diels-Alder reaction or 1,3-dipolar cycloadditions. Included in the invention are the novel bioconjugated macromolecules that can be prepared according to the method of the invention.Type: GrantFiled: July 8, 1999Date of Patent: May 18, 2004Assignee: Proligo, LLCInventors: Wolfgang Pieken, Ken Hill, Bruce Eaton, Danny McGee, Kurt Vagle, Larry Gold, Andrew Stephens
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Patent number: 6531637Abstract: A process for the preparation of resorcinol using the meta-phenylenediamine hydrolysis reaction is provided. A reactor vessel made of a suitable material such as zirconium or a zirconium alloy is used, thus resisting corrosion and formation of resinous materials.Type: GrantFiled: December 27, 2001Date of Patent: March 11, 2003Assignee: Indspec Chemical CorporationInventors: Raj B. Durairaj, Gary A. Jesionowski
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Patent number: 5216042Abstract: A method of preparing viscosity-stabilized toluene diisocyanate distillation residues comprising contacting toluene diisocyanate distillation residue with a material suitable for purging chloride-containing vapors under reaction conditions suitable to remove chloride-containing vapors from the toluene diisocyanate distillation residues. The material may be, for example, an aromatic solvent and/or a gas which associates, physically, chemically, or a combination thereof, with the vapors but not with significant amount of other components that may be present in the toluene diisocyanate distillation residue. The viscosity-stabilized and reactive residue can then be used alone or blended with one or more other isocyanate products, such as polymeric methylene diphenylisocyanate, to prepare materials such as polyurethane, polyisocyanurate, polyurethane-polyurea or polyurea compositions including, for example, foams.Type: GrantFiled: July 10, 1991Date of Patent: June 1, 1993Assignee: The Dow Chemical CompanyInventors: Rory D. Daussin, Steven B. Lowenkron, John L. Nafziger
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Patent number: 5208391Abstract: Processes for the preparation of tetracyano-1,4-hydroquinone and its conversion to tetracyano-1,4-benzoquinone via a disilver salt are disclosed.Type: GrantFiled: July 18, 1991Date of Patent: May 4, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Carlos Vazquez
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Patent number: 4982013Abstract: Polyhydroxybenzenes, e.g., the dihydroxybenzenes, are prepared by directly hydroxylating a phenol with nitrous oxide, preferably in vapor phase, on a substrate of acidified zeolite particulates, advantageously ZSM-5 zeolite particulates, and such acidified zeolite particulates advantageously having a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 of greater than about 90, preferably up to 500.Type: GrantFiled: May 2, 1989Date of Patent: January 1, 1991Assignee: Rhone-Poulenc ChimieInventors: Michel Gubelmann, Philippe-Jean Tirel
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Patent number: 4980505Abstract: The conversion of ortho-hydroxylated Mannich bases to the corresponding methylated compounds, e.g., cresols, can be effectively carried out using a novel hydrogenation technique.Type: GrantFiled: December 16, 1988Date of Patent: December 25, 1990Assignee: Clairol IncorporatedInventors: Yuh-Guo Pan, Lana L. Hochman
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Patent number: 4324925Abstract: An improved process for the preparation of a polyhydric phenol by hydroxylation of a phenol with a peroxidic hydroxylating agent, is disclosed. The improvement resides in that before the hydroxylation, all or some of the mixture to be hydroxylated is treated with a cation exchanger.Type: GrantFiled: June 30, 1980Date of Patent: April 13, 1982Assignee: Bayer AktiengesellschaftInventors: Christoph Jupe, Helmut Waldmann, Hermann Seifert
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Patent number: 4300001Abstract: The explosive 2,4,6-trinitrotoluene (TNT) is desensitized by dissolving it in oleum of from 10 to 40% (by weight) in strength. The solutions formed preferably contain at least 400 g and at most 480 g of dissolved TNT per liter of oleum in oleum of 20-25% strength. They are especially useful for the preparation of phloroglucinol.Type: GrantFiled: February 15, 1980Date of Patent: November 10, 1981Assignee: Oce-Andeno B.V.Inventor: Andreas J. J. Hendrickx
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Patent number: 4290975Abstract: Primary amines are selectively sulfamated by the two-step process of:A. Contacting the amine in liquid phase at low to moderate temperatures with catechol sulfate thereby forming a catechol sulfate addition product, andB. Hydrolyzing the catechol sulfate addition product to the desired sulfamate by contacting it at elevated temperature with a strong base in liquid phase.Type: GrantFiled: April 14, 1980Date of Patent: September 22, 1981Inventor: Grant E. DuBois
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Patent number: 4275247Abstract: Pyrogallol or a salt thereof is prepared by a process comprising deoximating cyclohexane-1,2,3-trione oxime or an oxime derivative thereof or a salt of either. Preferably the oxime itself is exployed, especially the 1,3-dioxime. The deoximation is preferably effected by hydrolysis.Type: GrantFiled: December 27, 1979Date of Patent: June 23, 1981Assignee: Fisons LimitedInventor: John F. Harris
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Patent number: 4270010Abstract: Hydroquinone is made by heating an aqueous solution of p-aminophenol, or of a salt of p-aminophenol with an acid made by catalytic or electrolytic reduction of nitrobenzene, with an organic sulfonic acid, and extracting from the reaction mixture the hydroquinone by contact with a water-insoluble solvent. Residual organic sulfonic acid can be recovered from the hydroquinone-free reaction mixture and reused.Type: GrantFiled: February 29, 1980Date of Patent: May 26, 1981Inventor: Efim Biller
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Patent number: 4118586Abstract: A process for preparing dihydroxytoluene by heating toluene diisocyanate distillation residue in the presence of an aqueous solution of phosphoric acid.Type: GrantFiled: September 12, 1977Date of Patent: October 3, 1978Assignee: Olin CorporationInventors: Stephen L. Goldstein, John S. Babiec, Jr.