[EN] METHOD FOR THE SYNTHESIS OF HETEROCYCLIC HYDROGEN PHOSPHINE OXIDE<br/>[FR] PROCÉDÉ POUR LA SYNTHÈSE D'UN OXYDE DE D'HYDROGÉNOPHOSPHINE HÉTÉROCYCLIQUE
申请人:STRAITMARK HOLDING AG
公开号:WO2016026871A1
公开(公告)日:2016-02-25
The present invention is related to a method for the synthesis of a heterocyclic hydrogen phosphine oxide, having the general formula (I), wherein: - R is a aliphatic or aromatic divalent group optionally comprising one or more heteroatoms and optionally comprising one or more substituents and - X and Y are independently selected from -O-, -C(O)O- and -NR'- wherein R' is a monovalent group optionally comprising one or more heteroatoms comprising the steps of: a) forming a reaction mixture by mixing a compound having the general formula HX-R-YH and tetraphosphorus hexaoxide; b) recovering the resulting compound comprising the heterocyclic hydrogen phosphine oxide.
The SO3H-tethered imidazolium and triazolium salts, nonvolatile and recyclable Brønstedacidicionicliquids, efficiently mediate intramolecular hydroalkoxylations of alkenyl alcohols. They have been successfully employed in the synthesis of (±)-centrolobine.
SO 3 H系咪唑鎓盐和三唑鎓盐,不挥发且可回收的布朗斯台德酸性离子液体,可有效介导链烯醇的分子内加氢烷氧基化反应。它们已成功地用于合成(±)-中心洛宾。
[EN] METHOD FOR THE MANUFACTURE OF COMPOUNDS CONTAINING AN a-OXY PHOSPHORUS GROUP<br/>[FR] PROCÉDÉ POUR LA FABRICATION DE COMPOSÉS CONTENANT UN GROUPE ?-OXY-PHOSPHORÉ
申请人:STRAITMARK HOLDING AG
公开号:WO2012098255A1
公开(公告)日:2012-07-26
A method for the manufacture of compounds containing an α-oxy phosphorus group is disclosed. A P-O component having at least one P-O-P moiety, whereby at least one phosphorus has the +3 oxidation state, is added in specific proportions to a compound containing an α-oxy carboxylic acid group, followed by conducting the reaction and adding water subsequently. The compounds containing an α-oxy phosphorus group formed can then be recovered.
Charge Screening in the S<sub>N</sub>2 Reaction of Charged Electrophiles and Charged Nucleophiles: An Ionic Liquid Effect
作者:Jason P. Hallett、Charles L. Liotta、Giuseppe Ranieri、Tom Welton
DOI:10.1021/jo802121d
日期:2009.3.6
study. The greatest promise that these ionic liquids hold is that they might offer process advantages, even novel behaviors that cannot be achieved in molecular solvents. We report here that the SN2 reaction of the trifluoromethanesulfonate and bis(trifluoromethanesulfonyl)imide salts of dimethyl-4-nitrophenylsulfonium ([p-NO2PhS(CH3)2]+[X]−; [X]− = [CF3SO3]−, [N(CF3SO2)2]−) with chloride ion follow a
在室温下将盐类液体用于化学合成已成为令人兴奋的研究领域。这些离子液体所具有的最大前景是,它们可能提供工艺优势,甚至是分子溶剂中无法实现的新颖行为。我们在这里报告说,三氟甲磺酸盐和二甲基-4-硝基苯基ium的双(三氟甲磺酰基)酰亚胺盐的S N 2反应([ p -NO 2 PhS(CH 3)2 ] + [X] -; [X] - = [ CF 3 SO 3 ] -,[N(CF 3 SO 2)2] –)与氯离子遵循的根本不同途径是相同的盐在分子溶剂中反应的时间。
Method for the manufacture of compounds containing an alpha-oxyphosphorus group by using an activator
申请人:Straitmark Holding AG
公开号:EP2567961A1
公开(公告)日:2013-03-13
A method for the manufacture of compounds containing an α-oxy phosphorus group is disclosed. A compound containing an α-oxy carboxylic acid group is reacted in a specific equivalent ratio with a nucleophilic P component, wherein the phosphorus atom has the oxidation state +1 or +3, whereby the compound containing an α-oxy carboxylic acid group or the nucleophilic P component or both are first reacted with an activator, followed by conducting the reaction and adding a water at the end of the reaction. The compounds containing an α-oxy phosphorus group formed are then recovered.