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| Number | Title | Issue Date |
| 7709687 | Dicarbanionic initiator, a process for the preparation and use thereof The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4′-b... | 05/04/2010 |
| 7423168 | Method for producing allyl compound A method for producing an allyl compound having a compositional formula different from that of an allyl starting material compound, which comprises reacting the allyl starting material compound with an oxygen nucleophilic agent having a structure different from that... | 09/09/2008 |
| 7268252 | Binaphthol derivatives and their use in optical resolution or optical transformation Disclosed herein are novel binaphthol derivatives and methods for the optical resolution of amino acids or amino alcohols and for the optical transformation of D, L-forms of amino acids using the same. ... | 09/11/2007 |
| 7192651 | Resin composition and prepreg for laminate and metal-clad laminate A resin composition for a laminate, containing at least 10% by weight of a vinyl compound represented by the formula (1), and a prepreg and a metal-clad laminate using the resin composition. ... | 03/20/2007 |
| 7112697 | Methods for formation of aryl-sulfur and aryl-selenium compounds using copper(I) catalysts A mild, palladium-free synthetic protocol for the cross-coupling reaction of vinyl or aryl iodides and thiols or selenols using, in certain embodiments, 10 mol % CuI and 10 mol % neocuproine, with NaOt-Bu as the base, in toluene at 110 ° C. A variety of vinyl/aryl ... | 09/26/2006 |
| 7109164 | Aniline-derived ligands for the thyroid receptor New thyroid receptor ligands are provided which have the general formula in which: X is —O—, —S—, —CH2—, —CO—, or —NH—; Y is —(... | 09/19/2006 |
| 6995195 | Vinyl compound and cured product thereof There are provided a vinyl compound which is excellent in heat resistance and electric characteristics and excellent in reactivity by introducing a vinyl group into a terminal of a bifunctional polyphenylene ether oligomer, and a cured product thereof which has a hi... | 02/07/2006 |
| 6800605 | Aniline-derived ligands for the thyroid receptor New thyroid receptor ligands are provided which have the general formula in which: X is —O—, —S—, —CH2—, —CO—, or —NH—; Y is —(CH2)n— where n is an i... | 10/05/2004 |
| 6762329 | Diaryl ether condensation reactions One aspect of the present invention relates to novel reaction conditions that allow the efficient synthesis of diaryl ethers from arenes bearing a leaving group and arenols under relatively mild conditions. Another aspect of the present invention relates to the dram... | 07/13/2004 |
| 6689919 | Catalysts for oxidative polymerization of fluorophenol, method of oxidative polymerization of fluorophenol, and poly(oxyfluorophenylene) derivative The synthesis of fluoropolyarylene ether with a high degree of polymerization is enabled, by using a copper complex catalyst with an oxidation potential in the range of -1V to 2V, for the oxidative polymerization of fluorophenols that contain at least one... | 02/10/2004 |
| 6596907 | Process for the preparation of 4,4'-dihalogen-o-hydroxydiphenyl compounds A description is given of a three-step process for the preparation of 4,4'-dihalogen-o-hydroxydiphenyl compounds of formula (1) which comprises: a) hologenating an alkoxyphenol of formula (6) (=a1), reacting the resulting halogenated phenol com... | 07/22/2003 |
| 6506800 | 1,4 diaryl-2,3-difluoro-2-butene insecticidal and acaricidal agents Pesticidal 1,4-diaryl-2,3-difluoro-2-butene compounds of formula I ##STR1## wherein Ar is phenyl, 1- or 2-naphthyl or a 5- or 6-membered heteroaromatic ring all of which aromatic systems may be optionally substituted; R is C2 -C6 -alkenyl... | 01/14/2003 |
| 6495728 | Process and intermediate compounds for the preparation of pesticidal fluoroolefin compounds A two-step process for the preparation of fluoroolefin compounds of formula I ##STR1## wherein R is hydrogen or alkyl, and R1 is alkyl or cyclopropyl, or R and R1 are taken together with the carbon atom to which they are attached to ... | 12/17/2002 |
| 6465687 | Thyroid receptor ligands and method Novel thyroid receptor ligands are provided which have the general formula (I) ##STR1## where R1 is alkyl of 1 to 4 carbons or cycloalkyl of 3 to 7 carbons; R2 and R3 are the same or different and are hydrogen, halogen, ... | 10/15/2002 |
| 6407292 | Preparation of alkylated diphenyl oxides A continuous process for the manufacture of alkylated diphenyl compounds such as diphenyl ether and diphenyl sulfides by alkylating a diphenyl compound such as diphenyl ether with an olefinic alkylating agent by passing a continuous flow of the diphenyl c... | 06/18/2002 |
| 6395939 | Diaryl ether condensation reactions One aspect of the present invention relates to novel reaction conditions that allow the efficient synthesis of diaryl ethers from arenes bearing a leaving group and arenols under relatively mild conditions. Another aspect of the present invention relates ... | 05/28/2002 |
| 6288011 | 1,4-diaryl-2,3-difluoro-2-butene insecticidal and acaricidal agents Pesticidal 1,4-diaryl-2,3-difluoro-2-butene compounds having the structural formula I ##STR1## and compositions and methods comprising those compounds for the control of insect and acarid pests.... | 09/11/2001 |
| 6198008 | Process for the preparation of 5-bromo-2-fluorobenzeneboronic acid A process is disclosed for the preparation of 5-bromo-2-fluorobenzeneboronic acid, which is useful as an intermediate in the preparation of a non-ester pyrethroid compound. The compound can be, for example, a fluoroolefin, which is useful as a pesticide.... | 03/06/2001 |
| 6166237 | Removal of dissolved silicates from alcohol-silicon direct synthesis solvents Dissolved silanes, silicones and silicates from solvents used in the slurry phase Direct Synthesis of alkoxysilanes are removed by adding a compatabilizing agent and water to generate filterable precipitates and reusable solvent. The solvents are thereby ... | 12/26/2000 |
| 6143922 | Diols and unsaturated monomers The present invention relates to a novel composition of diols, said composition of diols comprising HO--(H3 C)R4 C--Q--CR5 (CH3)--OH wherein Q is a diaryl group comprising two aryl groups linked together directly (as... | 11/07/2000 |
| 6090965 | Removal of dissolved silicates from alcohol-silicon direct synthesis solvents Dissolved silanes, silicones and silicates from solvents used in the slurry phase Direct Synthesis of alkoxysilanes are removed by adding a carboxylic acid such as formic acid to generate filterable precipitates and reusable solvent. The solvents are ther... | 07/18/2000 |
| 5925798 | Thoria catalyst A more reactive thoria catalyst for the production of diaryl ethers from aromatic compounds, a process for making the catalyst and the use of the catalyst is taught. The thoria catalyst has a specified surface area, density and average crystal size.... | 07/20/1999 |
| 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 |
| 5786520 | O-alkylation of phenolic compounds via rare earth orthophosphate catalysts Carbocyclic/aliphatic ethers, for example anisole, quaicol, guaethol, p-methoxyphenol and ethylene dioxybenzene, are selectively prepared, in good yield, by reacting a phenolic compound, for example a phenol, hydroquinone, pyrocatechin, naphthol, or the l... | 07/28/1998 |
| 5552549 | Process for the dechlorination of chlorinated aromatic compounds Chlorinated aromatic compounds are dechlorinated in a simple and inexpensive manner by heating them to 300° to 450° C. in a salt melt in the presence of water and/or water vapor and carbon.... | 09/03/1996 |
| 5552071 | Alkylated diphenyl ether lubricants Monoalkylated diphenyl oxides are high-temperature stable lubricant fluids having excellent low temperature viscometrics, and excellent additive solubility. These monoalkylated products are obtained by the alkylation of diphenyl oxide using, for example, ... | 09/03/1996 |
| 5397802 | Gem-dichlorocyclopropanes as antitumor agents Gem-Dichlorocyclopropanes (Analog II derivatives) which demonstrate antiproliferative activity toward MCF-7 cells, in vitro and are generally not reversed by estradiol or having intrinsic estrogenicity (except the hydroxyphenyl derivative Compound 30). In... | 03/14/1995 |
| 5382686 | Process for preparing nitrodiphenyl (thio) ethers Nitrodiphenyl(thio) ethers in which the nitro group is in the ortho- or para-position with respect to the ether oxygen or ether sulphur can be prepared from halonitrobenzones in which the nitro group is in the ortho- or para-position with respect to the h... | 01/17/1995 |
| 5312930 | Fluorinated sulfones/ketones for nonlinear optics This invention relates to optical elements capable of second harmonic generation and novel compositions for use in such optical elements comprising polar molecules placed in noncentrosymmetric configuration wherein such optical element has an electron don... | 05/17/1994 |
| 5288922 | Process of preparing diaryl ethers over a dealuminated zeolite catalyst A process of preparing diaryl ethers, such as diphenyl oxide, involving dehydrating a hydroxy-substituted aromatic compound, such as phenol, over a zeolite catalyst. The preferred zeolites are dealuminated acid mordenite and dealuminated zeolite Y.... | 02/22/1994 |
| 5288742 | , dialkylbenzyl derivatives The invention concerns ,-dialkylbenzyl derivatives of the formula I ##STR1## wherein Ar1 is phenyl or naphthyl, or a 10-membered bicyclic heterocyclic moiety containing one or two nitrogen heteroatoms and optionally cont... | 02/22/1994 |
| 5264511 | Polymers of bis (ethynylstyryl) benzene and related monomers Monomers, B-stage polymers, C-stage polymers, cured polymers and electricy conducting polymers of acetylene-terminated aromatic monomers containing three benzene rings separated by ethylene groups are disclosed. These new polymers can withstand aggressiv... | 11/23/1993 |
| 5242996 | Modified epoxy resins having acetylenically unsaturated functions A modified epoxy resin or compound of the formula: ##STR1## wherein A is the backbone reside of a glycidyl ether epoxy resin with removal of the glycidyloxy groups; R1 and R2 are independently a hydrogen atom or C1 -C... | 09/07/1993 |
| 5225436 | Aryl substituted naphthalene derivatives Certain aryl substituted naphthalene, benzoxepine, benzazepine and henzocycloheptene derivatives are disclosed. The compounds are useful in treating hyperproliferative skin disease, allergic reactions and inflammation.... | 07/06/1993 |
| 5183926 | Process for the preparation of aromatic dicarboxylic acids and aromatic hydrocarbons Aromatic dicarboxylic acids of the formula ##STR1## in which R1, R2, m, n, and X have the meaning mentioned in the description, can be prepared from the bisphenols, on which they are based, of the formula ##STR2## if t... | 02/02/1993 |
| 5167696 | Herbicidal aryloxy- and arylamino-indanes A compound of formula (I): ##STR1## in which Ar is an optionally substituted aryl or heterocyclic ring system; W is O or NR1 where R1 is hydrogen or lower alkyl; A is .dbd.CH or >CH2 and G is .dbd.C--R2, >CR | 12/01/1992 |
| 5144094 | Diaryl ethers by dehydration of phenols A composite of tungsten oxide on alumina, zirconia, or titania is active in promoting the dehydration of phenols to afford diaryl ethers if the composite is partially reduced with hydrogen at a temperature between 250° and 450° C. Using such a catalyst ... | 09/01/1992 |
| 5132423 | Method for conducting organic reactions using guanidinium salt as phase transfer catalyst Reactions between a solid polar and a non-polar compound, especially nucleophilic aromatic substitution reactions between an alkali metal salt of a hydroxyaromatic compound or thio analog thereof and an activated halo- or nitro-substituted aromatic compou... | 07/21/1992 |
| 5120876 | Fluorinated sulfones/ketones for nonlinear optics This invention relates to optical elements capable of second harmonic generation and novel compositions for use in such optical elements comprising polar molecules placed in noncentrosymmetric configuration wherein such optical element has an electron don... | 06/09/1992 |
| 5107031 | Proces to recover 4-phenoxybiphenyl The invention is a process to recover 4-phenoxybiphenyl from a phenoxybiphenyl mixture which includes at least 30% by weight of 4-phenoxybiphenyl, the balance being 2-phenoxybiphenyl, 3-phenoxybiphenyl and a minor amount of other compounds. The process in... | 04/21/1992 |
