专利号:WO-2024057083-A1 优先权日:2022-11-28 标 题 :Process for the synthesis of selectively alkylated cyclodextrins 发明人:IVÃ?NYI RÓBERT; TUZA KATA; SZENTE LAJOS; PUSKÃ?S ISTVÃ?N; SZÅ?CS LEVENTE; KURKAYEV ABDULA 权利人:CYCLOLAB CYCLODEXTRIN R&D LABORATORY LTD 摘要:The present invention generally relates to a process for the synthesis of selectively alkylated cyclodextrins. More particularly, the present invention relates to a process of cyclodextrin alkylation in a selective manner yielding hexakis(2,6-di-O-alkyl)-alpha-cyclodextrin, heptakis(2,6-di-O-alkyl)-beta-cyclodextrin and octakis(2,6-di-O-alkyl)-gamma-cyclodextrin.
专利号:US-12215369-B2 优先权日:2019-03-01 标题:Method for the in vivo synthesis of 4-hydroxymethylfurfural and derivatives thereof 发明人:ALEXANDRINO PAULO MOISES RADUAN; GOUVEA IURI ESTRADA; QUEIROZ VERONICA LEITE 权利人:BRASKEM SA 摘要:The present disclosure provides recombinant microorganisms and methods for the production of 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA from a carbon source. The method provides for engineered microorganisms that express endogenous and/or exogenous nucleic acid molecules that catalyze the conversion of a carbon source into 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA. The disclosure further provides methods of producing polymers derived from 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA.
专利号:US-12291505-B2 优先权日:2016-07-04 标题 :Methods for the synthesis of deuterated dextromethorphan 发明人:JOHNSON MATT; ZHAO CUNXIANG; MENG WEIHUA; LU ZHIJUN; LI YAN 权利人:AVANIR PHARMACEUTICALS INC 摘要:The application describes methods for making a deuterated dextromethorphan of Formula (I), deuterated dextromethorphan produced by these methods, and pharmaceutically acceptable salts thereof.
专利号:US-2013200009-A1 优先权日:2011-07-08 标题 :Method for Synthesis of MultiFunctional FE6+ - FE3+ Agent 发明人:FAN MAOHONG 权利人:FAN MAOHONG; UNIV WYOMING 摘要:The present invention is a new, easy method for preparing stable solid Fe 6+ —Fe 3+ agents in a fixed bed reactor by using O 3 and FeOOH along with KOH with conversion efficiencies of approximately 27%. In addition, the product has been used to oxidize oil from water and to destroy tetracycline in water
专利号:US-5955633-A 优先权日:1997-03-20 标题 :Synthesis of tertiary amine oxides 发明人:PRABHU VAIKUNTH S 权利人:GEN ELECTRIC 摘要:A process is provided for the manufacture of free-flowing solid tertiary amine oxides having N-nitrosodimethylamine levels of less than about 250 ppb. The process comprises heating a mixture of a tertiary amine, a polar hydroxy alkyl solvent, an organic acid, and aqueous hydrogen peroxide, followed by removal of the solvent and water, preferably by azeotropic removal. The resultant tertiary amine oxides have good color without bleaching and are useful without further purification.
专利号:WO-2023046836-A1 优先权日:2021-09-24 标 题:Process for preparing sartans 发明人:ZUPANCIC SILVO; SENICAR TANJA; PERÅ E BOÅ TJAN; BOMBEK SERGEJA; KLOBCAR ANDREJ; KRAÅ OVEC DuÅ¡an 权利人:KRKA D D NOVO MESTO 摘要:The present application relates to a process for purifying a tetrazole-containing-sartan or a tetrazole-containing-sartan intermediate, the process comprising the steps of (a) providing a composition comprising an azide-impurity together with a tetrazole-containing-sartan or with an intermediate of a tetrazole-containing-sartan; (b) treating the composition provided in step (a) with a reducing agent; preferably reacting the azide-impurity with a reducing agent thereby obtaining an amine-impurity; and (c) optionally, isolating the tetrazole-containing-sartan or the intermediate of the tetrazole-containing-sartan from the composition. The application further relates to a process for the synthesis of tetrazole-containing-sartans which ensures azide-impurities free final active pharmaceutical ingredients as well as azide-impurities free intermediates of tetrazole-containing-sartans that are suitable for the subsequent synthesis of tetrazole-containing-sartans.
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