CAS: 13472-45-2; Sodium Tungstate,Ar

专利信息

专利号:US-7199257-B1
优先权日:1999-06-10
标题 :Process for the synthesis of N-(4-cyano-3-trifluoromethylphenyl)-3-(4-fluorophenylsulfonyl)-2-hydroxy-2-methylpropionamide
发明人：SOEROES BELA; TUBA ZOLTAN; GALIK GYOERGY; BOR ADAM; DEMETER ADAM; TRISCHLER FERENC; HORVATH JANOS; BRLIK JANOS
权利人:RICHTER GEDEON VEGYESZET
摘要:A new process is disclosed for the synthesis of racemic or optically pure N-[4-cyano-3-trifluoro-methyl-phenyl]-3[4-fluorophenyl-sulfonyl]-2-hydroxy-2-methylpropionamide. The process includes the formation of several novel intermediates in the synthesis.

专利号:US-4384127-A
优先权日:1981-04-08
标 题:Process for synthesis of optically pure prostaglandin E2 and analogs thereof
发明人：FUCHS PHILLIP L
权利人:PURDUE RESEARCH FOUNDATION
摘要:The invention comprises a multi-step synthesis of l(-) prostaglandin E 2 . The special features of the synthesis include: (1) a triply-convergent conjugate-addition and alkylation reaction involving the 1,4-addition of a chiral vinyl lithium reagent to a chiral vinylsulfone to produce a sulfone-stabilized anion. This anion is alkylated in situ to produce the basic prostaglandin skeleton structure, which is then subjected to (2) an efficient peracid oxidation of a secondary amine to a β-silyloxy oxime; and (3) an alkali-catalyzed 1,4-elimination of an α-sulfonyl oxime to produce a vinyl nitroso intermediate. This intermediate is treated with borohydride to give a stereospecific 1,4-reduction which yields the bis-silyloxy oxime of l(-)PGE 2 . Hydrolysis of the oxime, with concurrent cleavage of the silyloxy protecting groups, affords l(-)PGE 2 .

专利号:US-7276637-B2
优先权日:2002-08-02
标题:Synthesis of cyclohexanone derivatives
发明人：BRANDS KAREL MARIE JOSEPH; DAVIES ANTONY JOHN; OAKLEY PAUL JOSEPH; SCOTT JEREMY PETER; SHAW DUNCAN EDWARD; TEALL MARTIN RICHARD
权利人:MERCK & CO INC
摘要:A novel process for preparing cyclohexanone derivatives of formula (I) n nis described. The products are useful as gamma secretase inhibitors, or as intermediates in the synthesis of other gamma secretase inhibitors.

专利号:US-10364262-B2
优先权日:2012-07-17
标 题 :Method for the synthesis of N-phosphonomethyliminodiacetic acid
发明人：DEVAUX ALBERT; BURCK SEBASTIAN; NOTTE PATRICK
权利人:MONSANTO TECHNOLOGY LLC
摘要:A method for synthesis of N-phosphonoalkyliminodiacetic acid or derivatives thereof by forming a reaction mixture having an acid catalyst, a compound of the following general formula R1—CH2—NX—CH2—R2 and a compound having one or more P—O—P anhydride moieties to form a compound having a formula R1—CH2—N(—CH2PO3R32)(—CH2—R2) wherein in R1—CH2—NX—CH2—R2: X is —CH2—OH or —CH2—COOH; R1 and R2 are independently selected from the group consisting of nitrile, C1-C4 alkyl carboxylate, and carboxylic acid for when X is —CH2—OH, or R1 and R2 are both carbonyl groups linked by a hydrogen substituted nitrogen atom or a C1-C4-alkyl substituted nitrogen atom; and R3 is H, an alkyl group, or an aryl group; the anhydride moieties in the P—O—P anhydride compound have one P atom at the oxidation state (+III) and one P atom at the oxidation state (+III) or (+V); and 2) hydrolyzing the mixture to form N-phosphonomethyliminodiacetic acid or one of its derivatives.

专利号:US-2025214849-A1
优先权日:2023-12-28
标 题:Synthesis of porous crystalline materials in the presence of water-soluble oxidized disulfide oil and fluoride mineralizer
发明人：HODGKINS ROBERT PETER; KOSEOGLU OMER REFA
权利人:SAUDI ARABIAN OIL CO
摘要:Methods are provided for hydrothermal synthesis of porous crystalline materials. The method generally comprises forming a solution of precursors and reagents in effective ratios for a porous crystalline material including a fluoride-containing mineralizer, and water-soluble oxidized disulfide oil. The solution is hydrothermally treated under effective conditions and for an effective time to synthesize porous crystalline materials.

专利号:US-2025214851-A1
优先权日:2023-12-28
标 题 :SYNTHESIS OF POROUS CRYSTALLINE MATERIALS IN THE PRESENCE OF FLUORIDE MINERALIZER AND pH-MODIFIED WATER-SOLUBLE OXIDIZED DISULFIDE OIL
发明人：HODGKINS ROBERT PETER; KOSEOGLU OMER REFA
权利人:SAUDI ARABIAN OIL CO
摘要:Methods are provided for hydrothermal synthesis of porous crystalline materials. The method generally comprises forming a solution of precursors and reagents in effective ratios for a porous crystalline material including a fluoride-containing mineralizer, and a pH-modified water-soluble oxidized disulfide oil composition. The solution is hydrothermally treated under effective conditions and for an effective time to synthesize porous crystalline materials.