3-乙基-2-甲基苯并噻唑碘化物,2-Phenylthiazolo<3.2-A>Pyrimidinium 3-Oxide置于三乙胺体系中,用 乙酸酐 作为反应溶剂,以100%的收率获得产物碘化噻唑青胺 参考文献:Mesoionic Compounds With A Bridged Nitrogen Atom. 7. Investigation Of The Cyclization Of (2-Pyrimidinylthio) Phenylacetic Acids 标题:Mesoionic Compounds With A Bridged Nitrogen Atom. 7. Investigation Of The Cyclization Of (2-Pyrimidinylthio) Phenylacetic Acids 摘要: DOI:10.1007/bf00514456
专利号:WO-2024055132-A1 优先权日:2022-09-12 标 题 :Method for the synthesis of a branched copolymer of hyaluronic acid and poly(lactic-co-glycolic) acid 发明人:VILOS ORTIZ CRISTIAN ANDRÉS; ZACCONI FLAVIA CRISTINA MILAGRO; SALAZAR MUÑOZ JAVIER ALONSO 权利人:UNIV TALCA; UNIV PONTIFICIA CATOLICA CHILE; FUND CENTRO DE NANOCIENCIA Y NANOTECNOLOGIA 摘要:The present invention provides a method for the synthesis of a branched copolymer of hyaluronic acid (HA) and poly(lactic-co-glycolic acid) (PLGA), and the branched copolymer thus obtained (HA-g-PLGA). Said method comprises activating the PLGA with coupling reagents in a water miscible solvent; solubilizing the HA in a phosphate buffered saline solution; and adding the activated PLGA solution dropwise to the solution with HA to obtain the branched copolymer. The advantages of the present method are that it uses environmentally friendly conditions and allows the copolymer to be synthesized and purified in less than a week under laboratory conditions. In addition, the branched copolymer obtained does not present traces of any of the reagents used for its synthesis, so it can be used directly in the development of applications for human use.
专利号:WO-2015036637-A1 优先权日:2013-09-13 标题:Method for the synthesis of kojibiose and the application thereof in the production of food and pharmaceutical compositions 发明人:DIEZ MUNICIO MARINA; MORENO ANDUJAR FRANCISCO JAVIER; HERRERO CALLEJA MIGUEL; MONTILLA CORREDERA ANTONIA 权利人:CONSEJO SUPERIOR INVESTIGACION 摘要:The invention relates to a method for the synthesis of kojibiose, characterised by its simplicity and high yield, using a starting reaction mixture containing, as the main compound thereof, the trisaccharide 2-α-D-glucopyranosyl-lactose, O-β-D-galactopyranosyl-(1→4)-O-[α-D-glucopyranosyl- (1→2)]-β-D-glucopyranose, and leucrose, lactose, fructose, glucose and saccharose, said method comprising steps of fermentation, hydrolysis and purification, allowing the production of a disaccharide with high added value, such as kojibiose, in a cost-effective manner. The invention also relates to the kojibiose produced by means of the method according to the invention, and to the use of same in the production of prebiotic food compositions in order to prevent pathologies relating to the gastrointestinal system, and pharmaceutical compositions for treating viral-type diseases or for delaying the digestion of carbohydrates.
专利号:WO-2023122843-A1 优先权日:2021-12-31 标题:Scaling of a process for producing tio2 doped with carbon quantum dots for use as a photoelectrode in thin-film solar cells 发明人:MATOS LALE JUAN; POON PO SHAN 权利人:UNIV CONCEPCION 摘要:The present invention relates to a process for producing a hybrid TiO2 material doped with carbon quantum dots, useful for producing photoelectrodes to be incorporated into thin-film solar cells. The process comprises: (a) synthesis of the hybrid material, which in turn comprises 3 sub-steps: (a.1) feeding: the following must be added to a reactor in the following order: a solvent, a carbon precursor, and finally titanium isopropoxide, the reactor operating at between 160 and 200°C for a period of between 14 and 18 hours; (a.2) filtering and washing of solids: the obtained solids must be filtered and washed, and the solids must be dried at 80 - 120°C for at least 2 hours; scaling of the feeding was verified at a factor of up to 50 times greater; and (a.3) calcination: the product obtained in step (a.2) must be calcinated at between 300 and 400°C, or 500 and 600°C; and (b) synthesis of the photoelectrode based on TiO2 doped with carbon in the form of thin films: the TiO2 doped with carbon (having an atomic ratio equal to 99:1) is dispersed in a mixture of terpineol and ethyl cellulose having a percentage ratio of 94:6 in excess acetone, constantly stirring for 48 – 72 hours; subsequently, once the layer of hybrid material is deposited on the tin oxide-based electrode doped with fluorine, the acetone is left to evaporate, and it is sintered to remove the terpineol and ethyl cellulose.
专利号:WO-2016037298-A1 优先权日:2014-09-11 标题 :Method for the enantioselective synthesis of 2(s)-amino-6-boronohexanoic acid (abh) and purification thereof 发明人:PREITE MARCELO DANIEL; MANRIQUEZ MUJICA JUAN MANUEL; CORREA VARGAS JORDAN MAURICIO; ITURRIAGA AGUERA RODRIGO MANUEL; CASANELLO TOLEDO PAOLA CECILIA; KRAUSE LEYTON BERNARDO JAVIER 权利人:UNIV PONTIFICIA CATOLICA CHILE 摘要:The invention relates to a method for the enantioselective synthesis and purification of 2(S)-amino-6-boronohexanoic acid (ABH) and the preparation of the corresponding synthetic intermediates. The method comprises the preparation of ABH from BPB-Ni-Gly, which is treated with a strong base in a suitable solvent, and is made to react with 2-(4-lower bromoalkyl)benzo[d] [1,3,2]dioxaborol, where the lower alkyl is an alkyl with between 1 and 6 carbon atoms, preferably 2-(4- bromo-butyl)benzo[d][1,3,2]dioxaborol, while stirring, in a nitrogen atmosphere and with a cryogenic bath at a low temperature (-50°C), in order to then permit same to reach ambient temperature, removing the cryogenic bath, before neutralising in aqueous medium with a weak organic acid, and extracting with dichloromethane, drying the resulting organic extract which is subsequently filtered and vacuum evaporated. The resulting alkylated complex is dissolved in a C1-C5 alcohol, adding a hydrochloric acid, refluxing in a nitrogen atmosphere, and is subsequently cooled to ambient temperature, and concentrated in order to achieve the precipitation of (S)-2-[N-(N'- benzylprolyl) amino]benzophenone (BPB), as the hydrochloride salt, filtering and extracting with dichloromethane, and after dissolving the aqueous phase of the filtrate in water, it is treated with ammonia concentrated to pH 9, and once again extracted with dichloromethane, the ammoniacal aqueous phase being vacuum evaporated until dry, in order to produce crude ABH, as the ammonium salt, which is subsequently purified by means of ion-exchange chromatography. The invention also relates to a method for preparing the Gly-Ni-BPB complex, 2-(4- bromo-butyl)benzo[d][1,3,2]dioxaborol, which is used as an alkylating agent in the form of a borate side chain, and (S)-N- benzylproline (BP).
专利号:WO-2023216004-A1 优先权日:2022-05-13 标 题:Method for producing graphene-based materials and use thereof in the manufacture of electrodes for electrochemical capacitors 发明人:MATOS LALE JUAN; POON PO SHAN; PINTO BURGOS OSCAR; URZÚA AHUMADA JULIO 权利人:UNIV CONCEPCION 摘要:The present invention relates to a method for producing a graphene-based material useful for storing electrical energy for the incorporation thereof into electrochemical capacitors. The method comprises the synthesis of the graphene-based material that comprises 5 sub-steps: feeding, activation/exfoliation, micro-nano separation, nano-decanting and nano-extraction. After this graphene-based material has been obtained, the electrode is manufactured in a process which is made up of 4 sub-steps: mixing, film preparation, filling with the electrolyte, and electrode cutting process. In light of the fact that the reported results regarding the manufactured electrodes show better electrochemical performance than those disclosed in the prior art, it can be concluded that the technological solution presented, which proposes the use of graphene-based materials produced from forestry waste, is a low-cost and eco-friendly solution for use thereof in the construction of electrodes for electrochemical capacitors.
专利号:WO-9941229-A1 优先权日:1998-02-11 标题:Halogenated phenyl alcohol amides (ligands of gabab receptor) having an anticonvulsant activity 发明人:CARVAJAL SANDOVAL GUILLERMO; MEZA TOLEDO SERGIO ENRIQUE 权利人:CARVAJAL SANDOVAL GUILLERMO; MEZA TOLEDO SERGIO ENRIQUE 摘要:New anticonvulsant compounds have been synthesized with a chlorine or fluorine atom in the position para of the phenyl ring. These compounds include DL-2-hydroxy-2-(4'-chlorophenyl)butyramide, DL-2-hydroxy-2-(4'-fluorophenyl)butyramide, DL-3-hydroxy-3-(4'-chlorophenyl)pentanamide, DL-3-hydroxy-3-(4'-fluorophenyl)pentanamide, DL-4-hydroxy-4-(4'-chlorophenyl)hexanamide and DL-4-hydroxy-4-(4'-fluorophenyl)hexanamide. Said compounds have a rather significant anticonvulsant activity against convulsions produced by pentylene tetrazol, as well as unexpected properties in particular a high affinity to the GABAB receptor in addition to a sustained anticonvulsant activity. The invention also relates to methods for the synthesis of halogenated phenyl alcohol amides such as indicated in the examples given in the disclosure.
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