CAS: 1111-67-7; Cuprous Thiocyanate

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540-72-7 592-87-0 1111-67-7

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专利信息

专利号:WO-2008115912-A1
优先权日:2007-03-21
标题:Regio-specific synthesis of 4-bromo-3-methyl-5-propoxy-thiophene-2-carboxylic acid
发明人：KUBIAK GREGORY G; LYTHGOE DAVID J; YU YONG
权利人:SANOFI AVENTIS; KUBIAK GREGORY G; LYTHGOE DAVID J; YU YONG
摘要:This invention is directed to a five step regio-specific synthesis of 4-bromo-3-methyl-5-propoxy-thiophene-2-carboxylic acid compound of formula 16 comprising the steps of acetalating 3-methyl-thiophene-2-carbaldehyde in an alcohol solvent; iodinating the acetalated 3-methyl-thiophene-2-carbaldehyde in an non-protic polar or hydrocarbon solvent to yield the corresponding iodinated and acetalated 3-methyl-thiophene-2-carbaldehyde product; treating the iodinated and acetalated product with water to yield the corresponding 5-iodo-3-methyl-thiophene-2-carbaldehyde; oxidizing the 5-iodo-3-methyl-thiophene-2-carbaldehyde to the corresponding 5-iodo-3-methyl-thiophene-2-carboxylic acid in ketone solvent; Ullmann coupling of the 5-iodo-3-methyl-thiophene-2-carboxylic acid with alkali metal propoxide salt using a copper catalyst in propanol to yield 3-methyl-5-propoxy-thiophene-2-carboxylic acid; esterifying 3-methyl-5-propoxy-thiophene-2-carboxylic acid to yield the corresponding alkyl 3-methyl-5-propoxy-thiophene-2-carboxylate; brominating the 3-methyl-5-propoxy-thiophene-2-carboxylic acid to yield the corresponding alkyl 4-bromo-3-methyl-5-propoxy-thiophene-2-carboxylate; and basic hydrolyzing the alkyl 4-bromo-3-methyl-5-propoxy-thiophene-2-carboxylate with base to yield 4-bromo-3-methyl-5-propoxy-thiophene-2-carboxylic acid.

专利号:US-6610802-B2
优先权日:2001-05-29
标题 :Process for synthesis of polymer compositions, polymer compositionS obtainable by the process, and use of the same
发明人：ROOS SEBASTIAN; EISENBERG BORIS; HARPE CAROLIN
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to a process for synthesis of polymer compositions with reduced catalyst content, wherein ethylenically unsaturated monomers containing less than 0.5 wt % of ethylenically unsaturated monomers with at least one carboxylic group, sulfonic acid group and/or at least one phosphonic acid group relative to the total weight of the ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts and, after the polymerization, the catalyst contained in the polymer is at least partly separated. For this purpose, the polymer composition is filtered, after the polymerization, in the presence of at least one filter aid which contains at least 0.5 wt %, relative to the total weight of the filter aid, of repeating units that contain at least one carboxylic acid group, sulfonic acid group and/or at least one phosphonic acid group.

专利号:US-4315857-A
优先权日:1979-07-20
标题 :Process for the synthesis of azobenzene compounds having a cyano group in one or both of the ortho positions of the diazo component radical
发明人：BUECHELER PAUL
权利人:SANDOZ LTD
摘要:A process for the synthesis of an azobenzene compound having a cyano group in one or both of the ortho positions of the diazo component radical comprising reacting the corresponding azobenzene compound having a chloro, bromo or iodo substituent in one or both of the ortho positions of the diazo component radical with a copper thiocyanate or copper thiocyanate-forming mixture of salts in the presence of an oxidizing agent (e.g., oxygen and sodium perborate), whereby the or at least one of the chloro, bromo and iodo substituents is replaced by a cyano group.

专利号:US-6610801-B1
优先权日:2000-11-13
标题:Processes for synthesis of polymer compositions
发明人：SCHERER MARKUS
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to processes for synthesis of poly(meth)acrylate compositions, wherein ethylenically unsaturated monomers are transformed to polymers by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts, wherein ethylenically unsaturated monomers containing 50 to 100 wt %, relative to the total weight of ethylenically unsaturated monomers, of (meth)acrylates of formula (I) are polymerizedwherein R denotes hydrogen or methyl, R1 denotes a straight-chain or branched alkyl group with 8 to 40, carbon atoms, R2 and R3 independently denote hydrogen or a group of the formula -COOR1, wherein R' denotes hydrogen or a straight-chain or branched alkyl group with 8 to 40, carbon atoms, in the presence of copper, the total concentration of copper of oxidation numbers (I) and (II) in the polymerization composition being <=200 ppm relative to the total weight of the composition.

专利号:US-6639029-B1
优先权日:2000-11-13
标 题 :Process for continuous synthesis of polymer compositions as well as use of same
发明人：SCHERER MARKUS; BOLLINGER JOSEPH MARTIN; COOPER JR DAVID J; TILLERY LARRY STEPHEN; WOODRUFF ROBERT
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to a process for synthesis of polymer compositions, wherein ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable atom or group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts, the process being characterized in that the polymerization takes place by means of continuous process operation.

专利号:WO-2008121669-A1
优先权日:2007-03-29
标题 :4-bromo-3-methyl-5-propoxythiophene-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester, its regio-specific synthesis and intermediate thereto
发明人：GELORMINI ANN MARIE; SHAY JOHN JOSEPHE JR; SLEDESKI ADAM W
权利人:SANOFI AVENTIS; GELORMINI ANN MARIE; SHAY JOHN JOSEPHE JR; SLEDESKI ADAM W
摘要:The present invention is directed to 4-bromo-3-methyl-5-propoxythiophene-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester, and intermediate, 3-methyl-5-propoxythiophene-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester, thereto. The present invention is also directed to the regio-specific synthesis of 4-bromo-3-methyl-5-propoxythiophene-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester compound comprising the steps of iodinating 3-methyl-thiophene with an iodinating agent in the presence of a strong base in an non-protic polar or hydrocarbon solvent to yield 2-iodo-4-methylthiophene; Ullmann coupling the 2-iodo-4-methylthiophene with an alkali metal propoxide salt using a copper catalyst in propanol to yield 4-methyl-2-propoxythiophene; coupling the 4-methyl-2-propoxythiophene with CO2 using strong base in an non-protic polar or hydrocarbon solvent to yield 3 methyl-5-propoxy-thiophene-2-carboxylic acid; esterifying the 3 methyl-5-propoxy-thiophene-2-carboxylic acid with N hydroxysuccinimide in the presence of a coupling agent in an non-protic polar, hydrocarbon or halohydrocarbon solvent to yield 3-methyl-5-propoxythiophene-2-carboxylic acid 2,5 dioxo-pyrrolidin-1-yl ester; and brominating the 3-methyl-5-propoxythiophene-2-carboxylic acid 2,5 dioxo-pyrrolidin-1-yl ester with a brominating agent in an inert solvent to yield 4-bromo-3-methyl-5-propoxythiophene-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester.