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| Number | Title | Issue Date |
| 7807851 | Method for producing α-fluoromalonic acid dialkyl esters The invention relates to a new, advantageous method for the preparation of dialkyl α-fluoromalonates. ... | 10/05/2010 |
| 7217833 | Carboxylic acid compounds for use as surfactants Compounds of formula (I) or a salt or solvate thereof, wherein: x represents 0 or 1; y represents 0 or 1; R1 and R2 independently represent —C1-... | 05/15/2007 |
| 7168489 | Orthoester compositions and methods for reducing the viscosified treatment fluids In one embodiment, the present invention provides a method of reducing the viscosity of a viscosified treatment fluid comprising contacting the viscosified treatment fluid with an acid generated from an orthoester composition that comprises an orthoester. In another... | 01/30/2007 |
| 7069071 | Distributed multi-user replication-based system for real time data access during cardiology procedures A distributed multi-user system for real time data access during cardiology procedures. The system includes an interactive computer network which can be used to simultaneously display data from a cardiology procedure on a plurality of devices and at a plurality of l... | 06/27/2006 |
| 7060840 | Catalytic asymmetric desymmetrization of prochiral compounds The present invention relates to methods for the synthesis of chiral non-racemic products, e.g., enantiomerically-enriched hemiesters, from prochiral starting materials, e.g., meso anhydrides. The present invention also relates to catalysts for the aforementioned me... | 06/13/2006 |
| 7053236 | Catalytic asymmetric desymmetrization of prochiral and meso compounds The present invention relates to methods for the synthesis of chiral non-racemic products, e.g., enantiomerically-enriched hemiesters, from prochiral and meso starting materials, e.g., prochiral and meso cyclic anhydrides. The present invention also relates to catal... | 05/30/2006 |
| 6875887 | Process for the preparation of iopamidol A compound and salts and enantiomers thereof, having the formula: wherein R7 is an acyl group. ... | 04/05/2005 |
| 6864386 | Fluorinated compounds Fluorinated compounds and emulsions including the compounds. The compositions are useful as oxygen carriers and surfactants. In one embodiment, the fluorinated compound is pH sensitive. In one embodiment, the fluorinated compound is a vitamin E derivative. In one em... | 03/08/2005 |
| 6677476 | Process for preparing R-(-) -carnitine from S-(-)-chlorosuccinic acid or from a derivative thereof An inner salt of L-carnitine is prepared by reduction, with a suitable reducing agent, of a compound of formula (I): ##STR1## where X1 and X2, which may be the same or different, are hydroxy, C1 -C4 alkoxy, phen... | 01/13/2004 |
| 6603037 | Ester compounds Acrylic esters containing fluorine at -position and having an alkoxymethyl group introduced into the ester side chain thereof are novel. Polymers obtained from the acrylic esters are improved in transparency, acid elimination and substrate adhesion... | 08/05/2003 |
| 6580003 | Catalytic asymmetric desymmetrization of meso compounds The present invention relates to methods for the synthesis of chiral non-racemic products, e.g., enantiomerically-enriched hemiesters, from prochiral starting materials, e.g., meso anhydrides. The present invention also relates to catalysts for the aforem... | 06/17/2003 |
| 6103677 | Lubricant and magnetic recording medium comprising the same A lubricant containing a fluorinated dicarboxylic acid of the formula: A1 --COO--R1 --Rf--R2 --OCO--A2 in which Rf is a divalent perfluoropolyether group; R1 and R2 are the same or differen... | 08/15/2000 |
| 6002039 | Liquid injection molding inhibitors for curable compositions Acetylenic maleates, fumarates and related derivative compounds are new compositions of matter having the formula: R1 O2 C--CH.dbd.CH--CO2 R2 wherein R1 may be an organic moiety containing at least two carbon ... | 12/14/1999 |
| 5998340 | Lubricant and magnetic recording medium using the same A lubricant containing a branched aliphatic diester of the general formula: R1 R2 R3 C--(CH2)n --X--R--X'--(CH2)n --CR4 R5 R6 in which R1 t... | 12/07/1999 |
| 5959139 | Process for producing optically active 2-hydroxy-4-arylbutyric acid or its ester Provided is an industrially useful process for producing an optically active 2-hydroxy-4-arylbutyric acid or its ester. An optically active acyloxysuccinic anhydride is reacted with an aromatic compound in the presence of a Lewis acid to produce an optica... | 09/28/1999 |
| 5847198 | Process for the preparation of esters A process for the preparation of an ester, especially fluorinated esters R1 O.OC--CHR2 --CO.OR3, R1 and R3 are each independently selected from alkyl, cycloalkyl and aryl. R2 is selected fr... | 12/08/1998 |
| 5606100 | Process for the preparation of trialkyl ester derivatives A process for the preparation of trialkyl ester derivatives of the general formula: ##STR1## wherein X is chlorine, bromine, iodine, tosyloxy or mesyloxy and R is a C1 -C6 -alkyl group. According to this process, a trialkyl ... | 02/25/1997 |
| 5569780 | Dialkyl 2-haloethyl malonates Novel dialkyl 2-haloethyl malonates are prepared from a dialkyl cyclopropane-1,1-dicarboxylate by reaction with a hydrogen halide in the presence of a 1,2-dialkoxy ethane as a solvent and of a Friedel-Crafts catalyst.... | 10/29/1996 |
| 5506309 | Perfluorinates polyethers This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.... | 04/09/1996 |
| 5463111 | Process for preparing dialkyl 2-haloethyl malonates Dialkyl 2-haloethyl malonates are prepared from a dialkyl cyclopropane-1,1-dicarboxylate by reaction with a hydrogen halide in the presence of a 1,2-dialkoxy ethane as a solvent and of a Friedel-Crafts catalyst.... | 10/31/1995 |
| 5399718 | Direct fluorination process for making perfluorinated organic substances A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert medium with a stoichi... | 03/21/1995 |
| 5391811 | Process for the preparation of -fluoro-ଲ-dicarbonyl compounds -fluoro-ଲ-dicarbonyl compounds are prepared by reacting a halogenated dicarbonyl compound at temperatures of 20° to 100° C. with an addition product of hydrogen fluoride and a trialkylamine. This process is easy to carry out in technical te... | 02/21/1995 |
| 5371272 | Process for preparing functionalized perfluoropolyoxyalkylenes A process for preparing functionalized perfluoropolyoxyalkylenes, wherein the corresponding perfluoropolyoxyalkylenes containing peroxy bonds in the chain are reacted with a primary or a secondary alcohol, or mixtures of these alcohols, in the presence of... | 12/06/1994 |
| 5346637 | Antiwear additives A multifunctional antiwear and antioxidant lubricant additive is the reaction product of a diacyl halide, a source of phosphorus or a source of phosphorus and an aryl amine. The diacyl halide is derived from a hydrocarbon-substituted succinic anhydride, s... | 09/13/1994 |
| 5312999 | Propoxybenzene derivatives and process for preparing the same Propoxybenzene derivatives represented by the following formula ##STR1## wherein Ra represents a nitro group, an amino group which may have a protecting group or an --NHCH.dbd.C(COO--C1-6 -Alkyl)2 group, Rb represents a hydrogen... | 05/17/1994 |
| 5214198 | Process for the manufacture of halomaleic and halofumaric esters There is provided a method of manufacture of dialkyl monohalomaleate and dialkyl monohalofumarate and mixtures thereof via a dehydrohalogenation of the appropriate dialkyl dihalosuccinate precursor in the presence of an aqueous base and a phase transfer c... | 05/25/1993 |
| 5210272 | Process for forming a fluoromethyl ketone The preparation of magnesium benzyl fluoromalonate and other equivalent materials, the synthetic equivalents of the --CH2 F moiety, is described. Reaction between these reagents and the in situ-formed imidazolides of various carboxylic acids gi... | 05/11/1993 |
| 5116544 | Hexafluoroneopentyl alcohol, derivative thereof fluorine-containing polymer and its use This invention provides (i) novel hexafluoroneopentyl alcohol, (ii) its derivatives, i.e., hexafluoroneopentyl (meth)acrylate, (iii) fluorinated polymers comprising said acrylate as the monomer component, and (iv) optical materials comprising said fluorin... | 05/26/1992 |
| 5101068 | Magnesium fluoromalonates The preparation of magnesium benzyl fluoromalonate and other equivalent materials, the synthetic equivalents of the --CH2 F moiety, is described. Reaction between these reagents and the in situ-formed imidazolides of various carboxylic acids gi... | 03/31/1992 |
| 5051447 | Oxime ethers, their preparation and fungicides containing these compounds Oxime ethers of the general formula ##STR1## where R1 and R2 are hydrogen or alkyl, R3 is hydrogen, halogen, cyano, aryl or aryloxy, the aromatic ring being unsubstituted or substituted, or R3 is heteroaryl, ada... | 09/24/1991 |
| 5004569 | Process for the production of carboxylic acid esters The invention relates to a process for the production of carboxylic acid esters from carboxylic acids and alcohols which is characterized in that neutral phosphites containing oxetane groups are used as esterification catalysts.... | 04/02/1991 |
| 4996350 | Method for the preparation of dialkyl dichlorosuccinates The present invention relates to an improved method for the preparation of dialkyl dichlorosuccinates by chlorination of a dialkyl maleate in the presence of a catalytic amount of a C1 -C4 alkyl alcohol in the absence of a solvent wh... | 02/26/1991 |
| 4990652 | Intermediates for preparing multifunctional thiadiazole lubricant additives The reaction products of the alpha-halogenated half esters or amides of succinic acid and thiadiazole dimercaptides as new compositions of matter and their use as lubricant additives possessing multifunctional properties such as extreme pressure, antiwear... | 02/05/1991 |
| 4980501 | Production of secondary-butyl fluoroester and secondary-butyl alcohol obtained therefrom A process for the production of secondary-butyl perfluoroester is provided by reacting ethylene with a perfluorocarboxylic acid in the presence of oxygen.... | 12/25/1990 |
| 4908385 | -halogenated dicarboxylic acids, pharmaceutical compositions and method of use The present invention provides pharmaceutical compositions containing at least one -halogenated dicarboxylic acid of the general formula: ##STR1## wherein Hal is a chlorine, bromine or fluorine atom, R is a hydrogen atom or Hal and m is a numb... | 03/13/1990 |
| 4847405 | Method for the preparation of anilinofumarate [quinoline-2,3- dicarboxylic] The present invention relates to novel methods for the preparation of anilinofumarate [quinoline- 2,3-dicarboxylic acid], a useful intermediate in the preparation of 2-(2-imidazolin-2-yl)-quinoline-3-carboxylic acid herbicidal agents.... | 07/11/1989 |
| 4828764 | N-Fluoro-N-Perfluoromethyl sulfonamides N-fluoro-N-perfluoromethyl sulfonamide compounds are provided as fluorinating agents for the fluorination of organic compounds by either the direct electrophilic fluorination of organic compounds or by the fluorination of organic compound carbanions.... | 05/09/1989 |
| 4740612 | Process for production of ଲ-dihalogenoethenylcyclopropane derivatives A novel process for producing a ଲ-dihalogenoethenylcyclopropane derivative of the formula, ##STR1## wherein R1 is a hydrogen atom or an alkyl group, R3 is a hydrogen atom, lower alkyl, acyl, carboxyl or alkoxycarbonyl grou... | 04/26/1988 |
| 4736059 | Process for the preparation of meso 2,5-dihaloadipates The present process produces the meso dialkyl 2,5-dihaloadipate from a mixture of the racemic dialkyl 2,5-dihaloadipate and meso 2,5-dihaloadipate. In the disclosed process, a 2,5-dihaloadipoyl halide is formed under conditions which result in the formati... | 04/05/1988 |
| 4705650 | Process for the preparation of compounds halogenated to an electron-attracting group Compounds halogenated in the -position to an electron-attracting group of formula ##STR1## in which X denotes a halogen atom, R denotes a hydrogen atom or a hydrocarbon radical or a radical --(CH2)3 --COOR1 and... | 11/10/1987 |
