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| Number | Title | Issue Date |
| 7256316 | Fluorine-containing vinyl ethers, their polymers, and resist compositions using such polymers A fluorine-containing vinyl ether represented by formula 1, wherein R represents an organic group containing at least one fluorine atom and a cyclic structure is provided. A fluorine-containing copolymer containi... | 08/14/2007 |
| 7220870 | Hydrolytic kinetic resolution of cyclic substrates The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisome... | 05/22/2007 |
| 7131546 | Product display support systems and methods A support system for supporting a product for retail display comprises an accessory, a rear portion, a front portion, and a magnetic portion. The accessory is adapted to support the product for retail display. The front portion supports the accessory and is rigidly ... | 11/07/2006 |
| 7115784 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or a... | 10/03/2006 |
| 7091270 | Pentabromobenzyl alkyl ethers and their use as fire retardants The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers. ... | 08/15/2006 |
| 6881868 | Process for the preparation of (R)-2-alkyl-3-phenyl-1-propanols Compounds of formula (I), wherein R1 and R2 are, independently of one another, H,C1-C6alkyl, C1-C6halogenalkyl, C1-C6alkoxyl, C1-C6alkoxy-C1-C | 04/19/2005 |
| 6770788 | Process and intermediate compounds for preparation of pesticidal fluoroolefin compounds A two-step process for the preparation of fluoroolefin compounds of formula I wherein R is hydrogen or alkyl, and R1 is alkyl or cyclopropyl, or R and R1 are taken together with the carbon at... | 08/03/2004 |
| 6706929 | Accelerated process for preparing O-methyl phenols, N-methyl heteroaromatic compounds, and methylated aminophenols An accelerated process for preparing an O-methyl phenol comprising reacting a phenol with dimethyl carbonate in the presence of a catalyst selected from 1,8-diazabicyclo[5.4.0]undec-7-ene; 1,4-diazabicyclo[2.2.2]octane; and dimethylaminopyridine. According to anothe... | 03/16/2004 |
| 6677002 | Phenylcyclohexanes and a liquid-crystalline medium Novel phenylcyclohexanes of the formula I: ##STR1## in which n is 0 to 7, Q1 and Q2 are H, or one of these radicals is alternatively CH3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-p... | 01/13/2004 |
| 6399837 | Electron donors A method of polymerizing at least one olefin comprising contacting the olefin with a catalyst composition comprising: 1) a procatalyst composition comprising a magnesium and titanium-containing component and an electron donor compound of the structure: ##... | 06/04/2002 |
| 6399835 | Process for electrophilic aromatic substitution Processes for the electrophilic substitution of aromatic compounds, such as alkylation, with a desired substituent are disclosed. The processes include contacting the aromatic compound, a precursor of the desired substituent and an aqueous reagent contain... | 06/04/2002 |
| 6380440 | Processes for the preparation of 3-bromoanisole and 3-bromonitrobenzene Process for the preparation of 3-bromoanisole comprising methoxydenitrating 3-bromonitrobenzene in the presence of a phase-transfer catalyst (PTC), and the preparation of 3-bromonirtobenzene by the bromination of nitrobenzene with bromine in oleum. The me... | 04/30/2002 |
| 6369279 | Styrene derivatives Styrene derivatives of formula (1) are novel wherein R1 is hydrogen, C1-20 alkyl, fluoro-substituted C1-20 alkyl, chloro, or trichloromethyl, R2 is a phenol protecting group, p, q and r are integers in the range... | 04/09/2002 |
| 6355813 | process of making 3-phenyl-1-methylenedioxyphenyl-indane-2-carboxylic acid derivatives Invented is an improved process for preparing aromatic ring-fused cyclopentane derivatives. Preferred compounds prepared by this invention are indane carboxylates and cyclopentanopyridine derivatives. The most preferred compounds prepared by this inventio... | 03/12/2002 |
| 6333436 | Styrene derivatives Styrene derivatives of formula (1) are novel wherein R1 is H, F, C1-20 alkyl or fluorinated C1-20 alkyl, R2 in cis or trans conformation is F, C1-20 alkyl or fluorinated C1-20 alkyl, R... | 12/25/2001 |
| 6288242 | Processes and intermediates for preparing substituted chromanol derivatives The invention relates to processes for preparing a compound of the formula ##STR1## 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 | 09/11/2001 |
| 6239317 | Process for the production of halogeno-o-hydroxydiphenyl compounds There is described a four step process for the production of halogeno-o-hydroxydiphenyl compounds having the formula ##STR1## in which X is --O--or --CH2 --; m is 1 to 3; and n is 1 or 2; wherein in the first step, a diphenyl compound is chlorinated... | 05/29/2001 |
| 6235949 | Process for the preparation of halogenated derivatives and Lewis acid base catalysts thereof A process for the preparation of halide compounds, preferably aryl halides, by contacting a gaseous mixture of hydrohalic acid and a compound selected from an aryl halogen formate, an aryl carbonate and equivalents thereof with a Lewis acid catalyst.... | 05/22/2001 |
| 6211399 | Pressurized chlorination and bromination of aromatic compounds Disclosed is a method of adding 1 to 4 chlorine or bromine atoms to an aromatic ring of compound that has at least one electron-withdrawing groups on that ring. The aromatic compound is reacted with a chlorinating agent or a brominating agent in the prese... | 04/03/2001 |
| 6172268 | Method for producing an optically active 1-substituted 2-propanol A method for producing an optically active 1-substituted 2-propanol of the following formula 1, which comprises reacting a hydroxy aromatic compound of the following formula 2 with an optically active propylene oxide in the presence of a catalyst: AOH Fo... | 01/09/2001 |
| 6166273 | Processes for fluorinating aromatic ring compounds A process is provided for increasing the fluorine content of benzene or pyridine rings which are optionally substituted with from 1 to 3 inert substituents. The process involves (a) contacting the ring with a metal fluoride composition comprising cupric f... | 12/26/2000 |
| 6124507 | Electron donors Novel compositions of the structure ##STR1## wherein R1 and R2 are each an alkoxy group which may be the same or different and have from one to ten carbon atoms, and R3 -R6 are each individually, hydrogen, ... | 09/26/2000 |
| 6118018 | Chlorination and bromination of aromatic compounds at atmospheric pressure Disclosed is a method of adding 1 to 4 chlorine or bromine atoms to an aromatic ring of compound that has at least one electron-withdrawing groups on that ring. The aromatic compound is reacted with a chlorinating agent or a brominating agent in the prese... | 09/12/2000 |
| 5981789 | Preparation of nuclear chlorinated aromatic compounds Disclosed is a method of preparing an aromatic compound having the general formula ##STR1## where R is CF3, OCF3, OC2 F5, CN, NCO, or COCl, m is 0, 1, or 2, n is 0, 1, or 2, q is 1 or 2, and q+m+n is an int... | 11/09/1999 |
| 5907063 | Aromatic bromination process Activated aromatic compounds are more economically ring brominated by reacting the compounds with a sulfoxide/HBr brominating agent while removing water from the reaction mixture. The water removal provides high conversions and yields when employing stoic... | 05/25/1999 |
| 5874656 | Process for preparing o-alkylfluorobenzenes o-Alkylfluorobenzenes are advantageously prepared by heating the corresponding chloroformates to from 70° to 200° C. in the liquid phase in the presence of hydrogen fluoride and in the presence of an inert diluent other than a halogenated alkane.... | 02/23/1999 |
| 5849959 | Derivatives of 2, 3, 6-trifluorophenols and a process for their preparation The present invention relates to compounds of the formula (1) ##STR1## where R is H, a straight-chain or branched alkyl radical with 1 to 6 carbons, a fluorinated straight-chain or branched alkyl radical with 1 to 6 carbons, a benzyl radical, or a be... | 12/15/1998 |
| 5817888 | Bromination process A bromination process for organic compounds employs stabilized bromine chloride solutions as the brominating agent. Activated aromatic compounds such as anisole can be selectively monobrominated in the para-position in high purity and yield.... | 10/06/1998 |
| 5773668 | Method of making trichloromethoxybenzene Disclosed is a method of making trichloromethoxybenzene. A mixture is prepared of anisole and a source of chlorine free radicals, such as chlorine or sulfuryl chloride. The reaction is performed in a solvent, which can be either benzotrifluoride, orthochl... | 06/30/1998 |
| 5654493 | Process for preparing 4-bromophenyl alkyl ethers The present invention relates to a process for preparing 4-bromophenyl alkyl ethers by reacting phenyl alkyl ethers with bromine in a water-miscible solvent in the presence of an oxidizing agent which is able to oxidize hydrogen bromide to bromine.... | 08/05/1997 |
| 5606084 | Process of fluorinating organic compounds with 1-substituted-4-fluoro-1,4-diazoniabicyclo octane salts The present invention relates to the preparation and uses of 1-substituted-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts, specifically 1-hydroxyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane salts as reagents for the introduction of fluorine in organic com... | 02/25/1997 |
| 5484932 | Halogenation processes in advantageous solvents, and novel bistrifluoromethyl-polyfluoroalkoxybenzenes Compounds such as ##STR1## wherein R is F, CF3, CF2 H, CHF CF3 or CF2 CF3, as well as related compounds containing chlorine, are used as solvents in halogenation processes.... | 01/16/1996 |
| 5478964 | N-fluorosulfonimides and their application as fluorinating agents The invention describes N-fluorosulfonimides which are useful as fluorinating agents. The N-fluorosulfonimides are stable, easily synthesized, and allow the introduction of fluorine into organic compounds under mild conditions.... | 12/26/1995 |
| 5476646 | X-ray contrast compositions containing iodophenoxyalkanes and pharmaceutically acceptable clays Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a nonionic x-ray producing agent in combination with a pharmaceutically acceptable clay in a pharmaceutically acceptable carrier; and met... | 12/19/1995 |
| 5463138 | Process for preparing difluoromethoxyarenes and difluoromethylthioarenes Difluoromethoxyarenes and difluoromethylthioarenes of the general formula (I), Ar--Q--CHF2 (I) in which Ar represents optionally substituted aryl, and Q represents oxygen or sulphur, (which can be used as interme... | 10/31/1995 |
| 5463088 | Process for preparing perfluoroalkoxy (alkylthio) benzenes A process for preparing perfluoroalkoxy(alkylthio)benzenes from perfluorochloroalkoxy(alkylthio)-benzenes by reaction with hydrogen fluoride in the gas phase and in the presence of a catalyst.... | 10/31/1995 |
| 5446186 | Structure and synthesis of nitrophenyl-EGTA, a caged calcium, intermediates thereof and a method of producing a high photochemical yield of liberated calcium The synthesis and compound of a new caged calcium which is an ortho-nitrophenyl derivative of EGTA and various intermediates. It is synthesized in ten steps and 24% overall yield. The photosensitive chelator, nitrophenyl-EGTA, has a Kd for Ca | 08/29/1995 |
| 5443814 | X-ray contrast compositions containing iodophenoxyalkanes and cellulose derivatives Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a nonionic x-ray producing agent in combination with a cellulose derivative in a pharmaceutically acceptable carrier; and methods for the... | 08/22/1995 |
| 5440051 | Process for the -chlorination of aryl ethers Aryl ethers are chlorinated in the -position by a process in which they are metered into a reaction vessel at the same time as chlorine, the reaction being carried out at temperatures in the range from 60° to 150° C.... | 08/08/1995 |
| 5422035 | Benzene derivatives, and liquid-crystalline medium A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, comprising one or more compounds of the formula I ##STR1## in which R, A1,. A2, Z1, Z2, m, n, L1... | 06/06/1995 |
