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| Number | Title | Issue Date |
| 8067648 | Method for synthesizing radioactive ligand having F-labeled fluorobenzene ring A phenyl tin compound is synthesized by using a derivative having various functional groups and a bromo- or iodo-benzene ring as a labeling material of a radioactive ligand. On the other hand, a novel hydroxytosyl iodobenzene compound having an electron-donating gro... | 11/29/2011 |
| 7595426 | Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene derivatives Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene comprising steps A) and B): A) chlorination of fluorobenzene derivatives of formula (II), in which X=fluorine of H, Z=nitro, bromo or chloro and n=0 or 1-4 and B) fluorination of ... | 09/29/2009 |
| 7371861 | Process for preparing ring-fluorinated aromatics The present invention relates to an improved process for preparing ring-fluorinated aromatics of the general formula (I) by a halogen exchange reaction (halex reaction) of a plurality of halogen substituents in one stage in... | 05/13/2008 |
| 7323608 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds One aspect of 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-sulfur bond between the sulfur atom of a t... | 01/29/2008 |
| 7202388 | Processes for preparing fluoroarenes from haloarenes Processes for preparing fluoroarenes are provided. The processes include contacting a compound having an unactivated aryl group with a source of fluoride or bifluoride in the presence of a transition metal a ligand. ... | 04/10/2007 |
| 7012165 | Oxidative fluorination of aromatic and chloroaromatic derivatives The subject invention provides methods of fluorinating an aromatic or chloroaromatic compound comprising combining an aromatic compound, a chloroaromatic compound, a mixture of aromatic compounds, a mixture of chloroaromatic compounds, or a mixture of chloroaromatic... | 03/14/2006 |
| 6784327 | Process for the production of fluorinated organic compounds and fluorinating agents A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a f... | 08/31/2004 |
| 6492569 | Process for the preparation of tetrafluorohalogenbenzenes A process is described for the preparation of compounds having the formula (I) C6 F4 HX, wherein X is Br or Cl, which comprises reacting tetrafluorobenzene with a halogen in the presence of a Lewis acid catalyst.... | 12/10/2002 |
| 6437168 | Method for production of aromatic fluorine compound A method for efficiently extracting a reaction product containing a target aromatic fluorine compound formed by the halogen exchange reaction of an aromatic chlorine compound with a fluorinating agent quickly from the reaction vessel without suffering par... | 08/20/2002 |
| 6407029 | Mixtures comprising tetrakis(pyrrolidino/piperdino)phosphonium salts The present invention relates to mixtures comprising from 70 to 99.5% by weight of a compound of the formula (R)4 P+ X- (1) and from 30 to 0.5% by weight of a compound of the formula (R)3 P.dbd.O (2), where R is... | 06/18/2002 |
| 6395700 | Process for the preparation of compounds having -CH2-CHF-groups Compounds each having a --CH2 --CHF-- group and a number of carbon atoms of 4 or above are prepared by hydrogenating a compound having a --CCl.dbd.CF-- group and a number of carbon atoms of 4 or above in the presence of a noble metal catalyst i... | 05/28/2002 |
| 6355849 | Process of use in perfluoroalkyation and reactant for making use of this process The subject-matter of the present invention is a process of use in perfluoroalkylation and a reactant for making use of this process. This process is defined in that it comprises a stage in which a material of formula RfH and a base (or a species capable ... | 03/12/2002 |
| 6307113 | Selective bromination of aromatic compounds Aromatic substrates such as fluorobenzene can be selectively brominated in high yield and conversion in short reaction periods by reacting the substrate with a brominating agent in a liquid reaction medium and in the presence of a catalyst composition for... | 10/23/2001 |
| 6297205 | Monohydric alcohol-free transparent moisturizing bar soap A monohydric alcohol-free, transparent, moisturizing bar soap having a high humectant solvent content. The formulation includes: (i) from about 38% to about 96% of one or more humectant solvents and (ii) from about 3% to about 20% of insoluble and/or solu... | 10/02/2001 |
| 6265627 | Process for preparing polyfluoroaromatic compounds A process for preparing polyfluoroaromatic compounds by heating halogen-containing aromatic compounds with alkali metal fluorides in the presence of a catalyst, N,N',N"-hexa-substituted guanidinium halide, in the medium of products of incomplete fluorinat... | 07/24/2001 |
| 6241917 | Halogen exchange reactions in preparing catalysts and their precursors Chloropentafluorobenzene or bromopentafluorobenzene is formed by heating perhalobenzene, C6 Fn X6-n where n is 0 to 4, and each X is, independently, a chlorine or bromine atom, with alkali metal fluoride, and an aminophosp... | 06/05/2001 |
| 6215032 | Catalyst recovery for halogen exchange reactions It has been found possible to separate catalytically-active aminophosphonium catalysts from mixtures composed predominately of aminophosphonium catalyst residue(s) and heavy ends from a halogen exchange reaction conducted in an aprotic solvent/diluent by ... | 04/10/2001 |
| 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 |
| 6087543 | Fluorinated benzene manufacturing process A process is disclosed for producing fluorinated benzene. The process involves (a) contacting chlorobenzene starting material with a metal fluoride composition of the formula (AgF)(MF2)x (where M is Mn, Fe, Co, Ni, Cu, Zn or a mixtur... | 07/11/2000 |
| 6043397 | Method for production of fluorine-containing aromatic compounds A method for the production of a fluorine-containing aromatic compound is provided which allows the relevant reaction to proceed in a standard reaction vessel such as, for example, a glass vessel at room temperature under an ambient pressure without requi... | 03/28/2000 |
| 5965781 | Catalysis in halogen exchange reactions Impure tetra(dihydrocarbylamino)phosphonium halide is contacted with a liquid cyclic ether to dissolve the phosphonium halide and leave at least a portion of the impurities comprising at least quaternary ammonium halide or an amidophosphoxide remaining in... | 10/12/1999 |
| 5900502 | Fluorination process According to the present invention there is provided a process for the selective introduction of one or more fluorine atoms into a disubstituted aromatic compound in an acid medium with fluorine gas characterized in that the acid medium has a dielectric c... | 05/04/1999 |
| 5847241 | Process for the preparation of p-bromofluorobenzene Process for the production of p-bromofluorobenzene by the bromination of fluorobenzene, characterized in that the bromination is carried out with liquid bromine at temperatures below 0° C.... | 12/08/1998 |
| 5824827 | Halogen exchange reactions An essentially anhydrous agitated mixture of (i) finely-divided essentially anhydrous alkali metal fluoride (e.g., KF), (ii) haloaromatic compound having at least one halogen atom of atomic number greater than 9 on an aromatic ring (e.g., C6 Cl... | 10/20/1998 |
| 5789631 | Production of perhalobenzenes An anhydrous mixture containing a liquid phase and a solids phase formed from components comprising finely-divided sodium fluoride, hexabromobenzene, and a phosphonium catalyst, and optionally a liquid aprotic solvent/diluent, is heated at a temperature a... | 08/04/1998 |
| 5744656 | Conversion of hexafluorobenzene to bromopentafluorobenzene A method for producing tetrakis (pentafluorophenyl) borates is described. Hexafluorobenzene is converted to bromopentafluorobenzene which may be isolated and then reacted with an alkyl lithium to produce pentafluorophenyl lithium which in turn is reacted ... | 04/28/1998 |
| 5684217 | Process for preparing 3-fluoro-4,6-dichlorotoluene 3-Fluoro-4,6-dichlorotoluene can be prepared in a particularly favourable manner by first chlorinating 3-fluorotoluene at low temperature in the presence of a Friedel-Crafts catalyst and a heterocyclic cocatalyst to give a mixture containing 3-fluoro-4-ch... | 11/04/1997 |
| 5674949 | Liquid-phase fluorination This invention pertains to a method for liquid-phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/07/1997 |
| 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 |
| 5461117 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/24/1995 |
| 5386069 | Process for preparation of difluoro-tetraiodobenzene Disclosed is a process for preparation of difluoro-tetraiodobenzene comprising contacting difluorobenzene with molecular iodine in the presence of fuming sulfuric acid.... | 01/31/1995 |
| 5349099 | Process for preparing intermediates for the synthesis of antifungal agents Disclosed is a process for preparing allylic halides of the formula I ##STR1## wherein X is Cl, Br or I, for use as intermediates in the synthesis of substituted tetrahydrofuran azole anti-fungal agents.... | 09/20/1994 |
| 5334788 | Reaction of substrate compounds with fluorine in an eductor Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial ... | 08/02/1994 |
| 5332790 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 07/26/1994 |
| 5322903 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5322904 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5315043 | Aromatic nucleophilic fluorination A process for halogen exchange fluorination or fluoro-denitration of aromatic compounds having at least one replaceable non-fluorine halogen or nitro substituent with an anhydrous substantially molten alkali metal acid fluoride composition wherein the alk... | 05/24/1994 |
| 5292975 | Process for decreasing the halogen content of polyhalogenated aromatics When the halogen content of polyhalogenated aromatics is decreased by reaction with monohalogenated and/or non-halogenated aromatics in the gas phase, good yields and significantly improved catalyst service lives are achieved if the reaction is carried ou... | 03/08/1994 |
| 5283378 | Process for the dechlorination and/or debromination of fluorine-and chlorine- and/or bromine-containing aromatic compounds Fluorine- and chlorine- and/or bromine-containing aromatic compounds are dechlorinated and/or debrominated with hydrogen in an industrially advantageous and selective manner, if the palladium catalyst is present in stationary phase and the aromatic compou... | 02/01/1994 |
| 5254732 | 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.... | 10/19/1993 |
