CAS: 636-73-7; Pyridine-3-Sulfonic Acid

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CAS号1851-22-5 3-氯吡啶N-氧化物 | CAS号110-86-1 吡啶 | CAS号109-00-2 3-羟基吡啶 | CAS号7664-93-9 硫酸 | CAS号7446-11-9 三氧化硫 | CAS号110-89-4 六氢吡啶 | CAS号29452-57-1 4-氨基吡啶-3-磺酸 | CAS号1083326-26-4 5-(4,4,5,5-四甲基-... | CAS号42899-76-3 吡啶-3-磺酰氯盐酸盐 | CAS号142141-07-9 异噻唑并[5,4-c]吡啶-3... | CAS号84539-34-4 4-氨基-3,5-二溴吡啶 | CAS号581-46-4 3,3'-联吡啶 | CAS号62009-33-0 5-溴砒啶-3-磺酰胺 | CAS号109-00-2 3-羟基吡啶 | CAS号26103-51-5 3-(吡咯啉-1-基磺酰)砒啶 | CAS号16133-26-9 吡啶-3-硫醇 | CAS号26103-48-0 4-(吡啶-3-基磺酰基)吗啉

3-羟基吡啶置于硫酸,锌体系中,化学反应生成 3-吡啶磺酸
参考文献:Fischer,O.; Renouf,Chemische Berichte,1884,Vol. 17,P. 764
标题:Fischer,O.; Renouf,Chemische Berichte,1884,Vol. 17,P. 764

专利信息

专利号:US-5827794-A
优先权日:1994-02-22
标 题 :Supported highly-polar liquid phase chiral sulfonated binap catalyst for asymmetric synthesis of optically active compounds
发明人：DAVIS MARK E; WAN KAM TO
权利人:CALIFORNIA INST OF TECHN
摘要:The present invention relates to water soluble chiral sulfonated 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl and its use as organometallic catalysts for asymmetric synthesis of optically active compounds. Asymmetric reactions of the present invention include those reactions in which organometallic catalysts are commonly used. Such reactions include, but are not limited to, reduction and isomerization reactions on unsaturated substrates and carbon--carbon bond forming reactions. Examples of such reactions include, but are not limited to, hydrogenation, hydroboration, hydrosilylation, hydride reduction, hydroformylation, alkylation, allylic alkylation, arylation, alkenylation, epoxidation, hydrocyanation, disilylation, cyclization and isomerization reactions. n The catalysts of the present invention provide the advantage of functioning in the presence of water without loss in enantioselectivity relative to the nonsulfonated BINAP catalyst in an organic solvent. As a result, the catalysts of the present invention may be employed in water, water miscible solvents, in aqueous--organic two phase solvent systems and in supported aqueous phase catalysts in organic solvents without loss in enantioselectivity. Further, the catalysts of the present invention may also be effectively employed in highly polar solvents such as primary alcohols and ethylene glycol. n The present invention also relates to a method for conducting asymmetric reactions on prochiral unsaturated bonds contained within a compound using the water soluble chiral sulfonated 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl organometallic catalysts of the present invention.

专利号:US-9982072-B2
优先权日:2013-10-30
标 题 :Synthesis of acetal compounds
发明人：LOCCUFIER JOHAN
权利人:AGFA GRAPHICS NV; AGFA NV
摘要:A process for the preparation of optionally asymmetric acetal compounds includes reacting a compound containing a hydroxyl group with a vinylether compound in the presence of a zwitterionic catalyst including at least one basic nitrogen containing structural fragment and at least one sulfonic acid group in its structure, with the proviso that a molar ratio of the basic nitrogen to sulfonic acid is 1:1.

专利号:US-5763624-A
优先权日:1995-06-08
标 题 :Process for the synthesis of 1-pyridiniumpropane-3-sulphonate
发明人：MINISCI FRANCESCO; FONTANA FRANCESCA; SERRI ANNA; BAIMA ROBERTO
权利人:GALVANEVET SPA
摘要:1-pyridiniumpropane-3-sulphonate is obtained by reacting 1-allylpyridinium chloride (3) and alkaline bisulfite, in an aqueous solution, in the presence of radical initiators, such as oxygen, hydrogen peroxide, peroxides, alkylhydroperoxides and alkaline or ammonium persulfates.

专利号:US-2409806-A
优先权日:1941-12-08
标 题:Synthesis of nicotinic compounds
发明人：WILLIAM SHIVE; GLENN RICHARD A
权利人:PITTSBURGH COKE & CHEMICAL CO

专利号:US-6004965-A
优先权日:1994-12-20
标题 :Sulfonamides
发明人：BREU VOLKER; BURRI KASPAR; CASSAL JEAN-MARIE; CLOZEL MARTINE; HIRTH GEORGES; LOEFFLER BERND-MICHAEL; MUELLER MARCEL; NEIDHART WERNER; RAMUZ HENRI
权利人:HOFFMANN LA ROCHE
摘要:Compounds of the formula: ##STR1## where A, B, R 1 -R 8 are as described herein are endothelin inhibitors that can be used in treating diseases associated with endothelin, such as high blood pressure. Chemical synthesis of these compounds and pharmaceutical compositions containing these compounds are also useful.

专利号:US-7511113-B2
优先权日:2002-04-26
标题:Oligomeric hydroxy arylether phthalonitiles and synthesis thereof
发明人：KELLER TEDDY M; DOMINGUEZ DAWN D
权利人:US NAVY
摘要:An aromatic ether oligomer or polyaromatic ether comprising the formula:n n O—Ar n ;n nwherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula:n n nformed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.