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| Number | Title | Issue Date |
| 7847112 | Polymorphs of atovaquone and process of preparation thereof Novel crystalline forms of anti Pneumocystis carinii compound (2-[4-(4-Chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoquinone) commonly known as Atovaquone and methods for producing the same is disclosed herein. This also provides pharmaceutical compositions c... | 12/07/2010 |
| 7439402 | Method for producing quinone compound A method for producing menatetrenone that does not have a deleterious influence on the environment, that is safe even when applied to large-scale production, and that is also simple to operate, wherein a compound represented by the following formula (1) | 10/21/2008 |
| 7235547 | Pharmaceutical composition comprising an AChE inhibitor and a mGluR2 antagonist The present invention relates to a pharmaceutical composition comprising an inhibitor of acetylcholinesterase (AChE inhibitor) and a metabotropic glutamate receptor 2 antagonist (mGluR2 antagonist) and a pharmaceutically acceptable excipient. The invention also rela... | 06/26/2007 |
| 7148386 | Processes for preparing benzoquinones and hydroquinones A process for the preparation of hydroquinone compounds comprising, reacting an aromatic hydroxy compound with an oxidizing agent in a biphasic solvent system. The reaction is carried out in the presence of a transition metal hydroxy phosphate catalyst to produce th... | 12/12/2006 |
| 7060686 | Anti-inflammatory compounds derived from Methods for treating, preventing, or inhibiting diseases and disorders associated with inflammation, cell-proliferation, and pain comprising the administration of a compound having the structural formula wherein ... | 06/13/2006 |
| 7053251 | Bromination of hydroxyaromatic compounds A method for brominating hydroxyaromatic compounds to form products, such as p-bromophenol, is disclosed. The method uses elemental bromine as the brominating agent and comprises contacting a hydroxyaromatic compound with bromine and oxygen in the presence of metal ... | 05/30/2006 |
| 7045666 | Bromination of hydroxyaromatic compounds and further conversion to dihydroxyaromatic compounds Brominated hydroxyaromatic compounds such as p-bromophenol are prepared by contacting a hydroxyaromatic compound with oxygen and a bromine source such as hydrogen bromide or an alkali metal or alkaline earth metal bromide in an acidic medium, in the presence of elem... | 05/16/2006 |
| 7022886 | Selective catalytic oxybromination of hydroxyaromatic compounds A method for selectively brominating hydroxyaromatic compounds is disclosed. Hydroxyaromatic compounds are contacted with oxygen and a bromine source, in an acidic medium, in the presence of a catalyst selected from the group of compounds and mixtures of compounds o... | 04/04/2006 |
| 6846941 | Process for separating unsaponifiable valuable products from raw materials Disclosed are processes for separating valuable products, including unsaponifiable materials, from any given matrix of raw materials that is mainly composed of saponifiable components and unsaponifiable components. Preferred methods include converting sodium or pota... | 01/25/2005 |
| 6828450 | Triptycene analogs This invention provides analogs of triptycene which are useful as anticancer drugs, as well as for other uses. The potency of these compounds is in a similar magnitude as daunomycin, a currently used anticancer drug. Each compound of the invention produces one or mo... | 12/07/2004 |
| 6787571 | Anti-inflammatory compounds derived from Pseudopterorgorgia elisabethae Methods for treating, preventing, or inhibiting diseases and disorders associated with inflammation, cell-proliferation, and pain comprising the administration of a compound having the structural formula wherein R1 ... | 09/07/2004 |
| 6500972 | Synthesis of TMBQ with transition metal-containing molecular sieve as catalysts A method of oxidizing trimethylphenol (TMP) to trimethylbenzoquinone (TMBQ) by various molecular sieves containing various transition metals. In this method, TMP, a molecular sieve containing a transition metal in its framework, an oxidant and a solvent a... | 12/31/2002 |
| 6365762 | Method for catalytic and selective oxidation of aromatic compounds The invention relates to the use of compounds of the formula R1a Reb Oc.L.sub.d (I), in which ##STR1## and the total of a, b and c is such as to comply with the pentavalency or heptavalency of rhenium, with the prov... | 04/02/2002 |
| 6346634 | Chemical compound containing a superoxide scavenger and an organic nitrate or nitrite moiety Compounds for use in the treatment of heart disease include a superoxide scavenger and an organic nitrate or nitrite moiety. The compounds can be represented by the formula (A)n(B)m, in which A is a superoxide scavenger, B is an organic nitrate or organic... | 02/12/2002 |
| 6180804 | Reversion of expoxide in the production of Hydrogen peroxide A working solution for producing hydrogen peroxide, containing an alkylanthraguinone working compound dissolved in a solvent, is regenerated by contacting the working solution with a catalyst containing from 5% to 100% boehmite at a temperature of 25° C.... | 01/30/2001 |
| 6162799 | Pesticidal compounds This invention relates to certain naphthoquinone derivatives of the general formula ##STR1## or a salt thereof, in which m, n, R, R1, R2, R3, R4, R5, R6, R7, R8 a... | 12/19/2000 |
| 6103700 | Fluoro labelled anthracyclinone and anthracycline derivatives Compounds of formula (A), wherein R1, R2, R3, Y and Z are organic substituents, are useful in the diagnosis of amyloidosis; some of the compounds of formula (A) are novel. Processes for their preparation, and pharmaceutica... | 08/15/2000 |
| 5977389 | Naphthoquinone derivative The present invention provides a naphthoquinone derivative represented by the general formula (1): ##STR1## wherein R1 represents an aryl group which may have a substituent; and R2 represents an alkylene group which may have a s... | 11/02/1999 |
| 5710292 | Process for the selective oxidation of aromatic compounds The invention relates to the use of compounds of the formula Rea Ob Xc Ld, (I) in which X=F, Cl, Br, I or OH, L=Lewis base, a=an integer 1, 2 or 3 b=zero or an integer from 2 to 9, c=zero or an integer... | 01/20/1998 |
| 5639718 | Multifunctional viscosity modifiers for lubricating oil compositions with improved dispersancy and antioxidancy derived from adducts of quinone An oil-soluble lubricating oil and fuel additive, useful as a multifunctional viscosity modifier comprising succinimide and other amine-containing polymers reacted with a quinone or substituted quinone adducts. Suitable polymers are those containing prima... | 06/17/1997 |
| 5616734 | Process for the catalytic oxidation of aromatic compounds The invention relates to the use of compounds of the formula I R1a Reb Oc (I), where a is from 1 to 6, b is from 1 to 4 and c is from 1 to 14 and the sum of a, b and c is in accordance with the... | 04/01/1997 |
| 5608092 | 1,4,4a 5,8,9a -hexahydro-1,4-methanoan-thraquinone derivative(s) The present invention relates to intermediates useful for the preparation of vitamin K derivatives.... | 03/04/1997 |
| 5304658 | Quinone derivatives, their production and use Quinone derivatives of the general formula: ##STR1## (wherein R1 and R2 are the same or different, and independently are a hydrogen atom or a methyl or methoxy group, or R1 and R2 combine with each other to... | 04/19/1994 |
| 5187195 | Anthraquinone derivatives and preparation thereof Anthraquinone compounds of the formula: ##STR1## wherein: R1 is hydrogen, hydroxy or acyloxy, R2 is hydrogen or acyl, R3 is acyl, R4 is hydrogen or acyl, R5 is hydrogen or acyl, R6 is hydrogen o... | 02/16/1993 |
| 5175318 | Process for the preparation of quinones Phenols are oxidated to quinones with hydrogen peroxide in the presence of catalytic amounts of bromine, iodine, hydrogen bromide and hydrogen iodide.... | 12/29/1992 |
| 5153339 | Process for separation of naphthoquinone and phthalic acid Naphthoquinone having a purity of higher than 95% is separated from an aqueous slurry of naphthoquinone and phthalic acid prepared by contacting, with an aqueous medium, a reaction mixture gas containing naphthoquinone and phthalic anhydride formed by a c... | 10/06/1992 |
| 5149849 | Process for the preparation of quinhydrones Disclosed is a process for the preparation of quinhydrones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.... | 09/22/1992 |
| 5049236 | Lignin derived quinonic compound mixtures useful for the delignification of cellulosic materials A method for the preparation of a mixture of fused ring quinone type compounds from lignin and lignin-derived substances. The mixture of fused ring quinone compounds has been found useful in the wood pulping process as an accelerator in the degradation an... | 09/17/1991 |
| 4960914 | Method for the preparation of naphthoquinone A catalyst for use in vapor phase oxidation of naphthalene into 1,4-naphthoquinone is dislosed. The catalyst which is supported on an inert carrier material is represented by the formula: (V)a(K)b(S)c(Fe)d(Sn)e(X)f(O)g where V, K, S, Fe, Sn and O stand for van... | 10/02/1990 |
| 4952495 | Hydrolyzable compounds which release electron transfer agents and analytical use of same Hydrolyzable substrates comprise blocked moieties which, when cleaved from the substrate during hydrolysis, provide electron transfer agents. The released electron transfer agents can be recycled between a reductant and a reducible compound that upon redu... | 08/28/1990 |
| 4701245 | Oxidation of organic compounds using a catalyzed cerium (IV) composition A process for oxidizing aromatic and alkyl substituted aromatic compounds to quinonoid compounds by contacting an aromatic and alkyl aromatic compound with an acidic, aqueous solution of ceric oxidant in the presence of a catalytic amount of chromium cati... | 10/20/1987 |
| 4678583 | Use of hydrates for aqueous solution treatment A process for forming a purified solute from an aqueous solution is provided whereby a mixture of an extractant, a hydrate former and the aqueous solution is first formed. The hydrate former forms a hydrate with water while the solute does not form a hydr... | 07/07/1987 |
| 4670108 | Oxidation of organic compounds using ceric methanesulfonate in an aqueous organic solution A process for oxidizing aromatic and alkyl substituted aromatic compounds to carbonyl containing compounds by contacting an aromatic or alkyl aromatic compound with ceric methanesulfonate in an aqueous, weakly acidic solution containing an organic cosolve... | 06/02/1987 |
| 4647349 | Oxidation of organic compounds using ceric ions in aqueous trifluoromethanesulfonic acid A process for oxidizing aromatic and alkyl substituted aromatic compounds to carbonyl containing compounds by contacting an aromatic and alkyl aromatic compound with an aqueous solution of ceric trifluoromethanesulfonate having from at least 0.75 to 7 mol... | 03/03/1987 |
| 4639298 | Oxidation of organic compounds using ceric ions in aqueous methanesulfonic acid A process for oxidizing aromatic and alkyl substituted aromatic compounds to carbonyl containing compounds by contacting an aromatic and alkyl aromatic compound with an aqueous solution of ceric methanesulfonate having from at least 1.5 to 9 molar concent... | 01/27/1987 |
| 4632782 | Oxidizing an organic compound A process for oxidizing an organic compound by ceric sulfate dissolved in an aqueous sulfuric acid solution, wherein the organic compound is oxidized (1) by means of a ceric sulfate-aqueous sulfuric acid solution or a cerous sulfate-containing ceric sulfa... | 12/30/1986 |
| 4536337 | Process for the preparation of quinones A process for preparing a quinone, which comprises reacting a polynuclear aromatic hydrocarbon and a ceric salt in an aqueous acid solution in the presence of an organic solvent selected from the group consisting of chlorobenzene and an alkylbenzene repre... | 08/20/1985 |
| 4515664 | Electro organic method Discloses electro-organic synthesis process using a water wetted gaseous feed. Also discloses the electro-organic synthesis of hydrogen peroxide; 1,4-naphthoquinone; and organic nitriles.... | 05/07/1985 |
| 4394315 | Method for manufacturing p- and o-benzoquinone derivatives A method for synthesizing p- or o-benzoquinone derivatives represented by formula III or IV ##STR1## by oxidizing, with an aqueous hypohalite solution having a pH of from 8 to 10, a p- or o-hydroquinone derivative represented by formula I or II ... | 07/19/1983 |
| 4369140 | Process for producing hydroanthraquinones A hydroanthraquinone is produced from a reaction mixture obtained by the Diels-Alder reaction of naphthoquinone with a conjugated diolefin in an inert organic solvent. The reaction mixture in an inert organic solvent is oxidized with an oxidizing agent to... | 01/18/1983 |
