CAS: 75-56-9; 1,2-Epoxypropane

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CAS号187737-37-7 propene | CAS号311-86-4 2-溴-3,3,3-三氟-1-丙醇 | CAS号74-98-6 丙烷 | CAS号3071-32-7 1-hydroperoxyet... | CAS号67-56-1 甲醇 | CAS号34557-54-5 methane | CAS号124-38-9 二氧化碳 | CAS号78-75-1 1,2-二溴丙烷 | CAS号19686-73-8 1-溴-2-丙醇 | CAS号57-55-6 丙二醇 | CAS号4203-80-9 N-tert-butyl-bi... | CAS号109605-04-1 4-tert-butyl-2,... | CAS号109605-10-9 4-tert-butyl-2,... | CAS号1074-54-0 1-(哌嗪-1-基)丙-2-醇 | CAS号7672-76-6 alpha,alpha-Dim... | CAS号111609-82-6 1-(3-chloroanil... | CAS号1068-47-9 1-巯基-2-丙醇 | CAS号6704-15-0 2-Propanol,1,1'... | CAS号10602-14-9 2-hydroxypropyl... | CAS号14807-82-0 propan-1-ol 2-p...

专利信息

专利号:US-7527712-B2
优先权日:2002-07-23
标 题 :Method for the continuous purification by distillation of the solvent methanol, used in the synthesis of propylene oxide
发明人：BASSLER PETER; GOEBBEL HANS-GEORG; TELES JOAQUIM HENRIQUE; RUDOLF PETER
权利人:BASF AG
摘要:Process for the continuously operated purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols being separated off simultaneously, wherein the solvent mixture obtained in the synthesis is separated in a dividing wall column into a low-boiling fraction including methanol, an intermediate-boiling fraction containing the methoxypropanols as azeotrope with water and a high-boiling fraction including water and propylene glycol.

专利号:US-2005252762-A1
优先权日:2002-07-23
标 题:Method for the continuous purification by distillation of methanol, used as a solvent in the synthesis of propylene oxide without coupling products, with the simultaneous isolation of the methoxy propanols
发明人：BASSLER PETER; GOBBEL HANS-GEORG; TELES JOAQUIM H; RUDOLF PETER
权利人:BASF AG
摘要:Continuously operated process for the purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols, as azcotrope with water, and the low boilers and high boilers simultaneously being separated off, wherein the solvent mixture obtained in the synthesis is fractionated in a dividing wall column.

专利号:US-7332634-B2
优先权日:2002-07-23
标题:Method for the continuous purification by distillation of 1,2-propylene glycol that accumulates during the synthesis of propylene oxide without coupling products
发明人：BASSLER PETER; GOEBBEL HANS-GEORG; TELES JOAQUIM HENRIQUE; RUDOLF PETER
权利人:BASF AG
摘要:The invention relates to a continuously operated process for the purification by distillation of the 1,2-propylene glycol formed as by-product in the synthesis of propylene oxide, wherein the mixture formed in the synthesis which contains the 1,2-propylene glycol is separated in a dividing wall column into low-, intermediate- and high-boiling fractions and the 1,2-propylene glycol is taken off as intermediate boiler at the side offtake of the column.

专利号:US-5521310-A
优先权日:1992-10-07
标 题 :Process to obtain benzoxazines to be used for the synthesis of ofloxazine, levofloxazine and derivatives
发明人：CARRETERO GONZALVEZ JUAN-CARLO; VICIOSO SANCHEZ MERCEDES; GARCIA RUANO JOSE-LUIS
权利人:ETILO DERIVADOS
摘要:A process to obtain benzoxazines useful for the synthesis of Ofloxazine, Levofloxazine and derivatives. The benzoxacines (I) where Xb is an halogen and R 1 is H, alkyl or alkenyl of up to 6 atoms of C or aryl, can be obtained by means of cycling a compound of formula (II) through the reaction with triphenylphosphine and ethyl azodicarboxilate. The compounds of formula (II) can be obtained through the reaction of a compound (III) with an adequate epoxide. Through the use of the adequate chiral epoxide it is possible to obtain the enantiomerically desired intermediate and, therefore and selectively, it is possible to obtain the desired final product with the adequate enantiomeric form without the need to carry out a resolution stage. n The Compounds (I) are useful and key intermediates for the synthesis of the antimicrobials Oflixazine and Levofloxazine. ##STR1##

专利号:US-2021130543-A1
优先权日:2019-10-30
标 题:Synthesis of cyanurate and multifunctional alcohol-based polyether acrylate for uv curable materials
发明人：YUAN ZHONGSHUN; XU CHUNBAO; WU WEI
权利人:YUAN ZHONGSHUN; XU CHUNBAO; WU WEI
摘要:Polyether (meth)acrylates based on cyanuric acid or substituted cyanuric acid and multifunctional alcohol, which optionally include triethanolamine units, have wide applications in UV curable adhesives, coatings, inks, sealants, paints or 3D printing. These polyether acrylates have rigid cyanurate structure endowing the material with extra strength and thermal stability. Furthermore, triethanolamine unit, when present, endows the material with anti-oxygen inhibition property in UV curing process. These polyether (meth)acrylates have low viscosity and high reactivity towards UV curing. The cured resins have high resilience and strength. The process of making the polyether (meth)acrylates includes the synthesis of trifunctional polyether polyols through controlled polymerization of propylene oxide using multifunctional alcohol (such as glycerol and sucrose), cyanuric acid or substituted cyanuric acid, and optionally triethanolamine, in the presence of a catalyst, followed by the synthesis of polyether (meth)acrylates through transesterification or through direct esterification of the trifunctional polyether polyols.

专利号:WO-2024036115-A1
优先权日:2022-08-08
标题:Continuous flow synthesis of lorazepam
发明人：THOMPSON DAVID; BIYANI SHRUTI; HYUN SEOK-HEE; MCGUIRE MICHAEL
权利人:PURDUE RESEARCH FOUNDATION; CONTINUITY PHARMA LLC
摘要:A method for synthesis of Lorazepam in a continuous flow using continuous flow reactor, in which method comprises five steps including N-acylation, diazepine ring closure, imine N- oxidation, Polonovski-type rearrangement, and ester hydrolysis; a green reagent comprising a peroxide reagent and rhenium oxide catalyst for N-oxidation of delorazepam; and an ammonium source combination for the synthesis of delorazepam.