Physical and Electrochemical Modulation of Polyoxometalate Ionic Liquids via Organic Functionalization
作者:Alexander J. Kibler、Carmen Martín、Jamie M. Cameron、Agata Rogalska、Jairton Dupont、Darren A. Walsh、Graham N. Newton
DOI:10.1002/ejic.201800578
日期:2019.1.31
The synthesis and characterization of two new organic/inorganic hybrid polyoxometalate ionic liquids (POM‐ILs) is described. The POM‐ILs were formed by pairing bulky trihexyl(tetradecyl)phosphonium cations [THTP]+ with organosiloxane and organophosphonate‐functionalized Keggin‐type POMs [PW11O39(SiPh)2O]3– and [PW11O39P(O)Ph}2]3–. The functionalized POM‐ILs were found to be more thermally stable than
描述了两种新型的有机/无机杂化多金属氧酸盐离子液体(POM-ILs)的合成和表征。POM-IL是通过将大体积的三己基(十四烷基)phosph阳离子[THTP] +与有机硅氧烷和有机膦酸酯官能化的Keggin型POM配对而形成的[PW 11 O 39(SiPh)2 O] 3–和[PW 11 O 39 P (O)Ph} 2 ] 3–。发现功能化的POM-IL比其分子前体具有更高的热稳定性,并且对它们的电化学性质进行比较表明,POM阴离子的可调电子结构决定了杂化材料的氧化还原化学。
[EN] SYSTEM PROVIDING CONTROLLED DELIVERY OF GASEOUS CO FOR CARBONYLATION REACTIONS<br/>[FR] SYSTÈME PERMETTANT LA LIBÉRATION CONTRÔLÉE DE CO GAZEUX POUR RÉACTIONS DE CARBONYLATION
申请人:UNIV AARHUS
公开号:WO2012079583A1
公开(公告)日:2012-06-21
A carbonylation system comprising at least one carbon monoxide producing chamber and at least one carbon monoxide consuming chamber forming an interconnected multi-chamber system, said interconnection allowing carbon monoxide to pass from the at least one carbon monoxide producing chamber to the at least one carbon monoxide consuming chamber, said at least one carbon monoxide producing chamber containing a reaction mixture comprising a carbon monoxide precursor and a catalyst, said at least one carbon monoxide consuming chamber being suitable for carbonylation reactions, said interconnected multi- chamber system being sealable from the surrounding atmosphere during carbonylation.
Nanostructured Borate Halides for Optical Second Harmonic Generation at Surfaces
作者:Deming Tan、Benjamin Kirbus、Lukas M. Eng、Michael Ruck
DOI:10.1002/ejic.202000286
日期:2020.7.7
synthesized at low temperature in task‐specific ionicliquids (IL). Optimized reactions of acetates A (OAc)2 (A = Sr, Ba) and boric acid B(OH)3 with the mixed IL [P66614]X (X = Cl, Br) and LiNTf2 led to nano‐rods of Sr2B5O9Cl, nano‐needles of Sr2B5O9Br, and nano‐sheets of Ba2B5O9Cl. The reaction route presented here might trigger the synthesis of other borate compounds. Efficient second‐order nonlinear
[EN] METHOD FOR PREPARATION OF BETULINIC ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDE BÉTULINIQUE
申请人:STORA ENSO OYJ
公开号:WO2013038314A1
公开(公告)日:2013-03-21
The invention relates a method for preparation of betulonic acid or betulinic acid from betulin wherein the method comprises a stage for oxidizing betulin to betulonic aldehyde and/or betulinic aldehyde with Pd(ll)-catalyst catalyzed oxidation process in the presence of dioxygen.
[EN] PHOSPHONIUM IONIC LIQUIDS AS RECYCLABLE SOLVENTS FOR SOLUTION PHASE CHEMISTRY<br/>[FR] LIQUIDES IONIQUES DE PHOSPHONIUM UTILISES EN TANT QUE SOLVANTS RECYCLABLES POUR DES PROCESSUS CHIMIQUES EN PHASE SOLUTION
申请人:UNIV FRASER SIMON
公开号:WO2006007703A1
公开(公告)日:2006-01-26
This application relates to the use of phosphonium-based ionic liquids as recyclable solvents for solution phase chemistry. The ionic liquids may be used, for example, as solvents for reactions involving Grignard reagents, hydridic reagents, metallic and non-metallic reducing agents, and strong bases, including nucleophilic carbenes and Wittig reagents. In one embodiment the invention may comprise homogeneous mixtures of strong bases/nucleophiles/reducing agents and tetrahydrocarbylphosphonium salt ionic liquids. The invention also relates to chemical processes that may proceed in either minimally flammable solvent, or a complete absence of flammable solvent, including systems containing strong reducing agents such as alkali and alkaline metals or metal and non-metal hydrides. Methods for generating anions and nucleophililic carbenes (imidazol-2-ylidenes) (and complexes derived from them) in phosphonium-based ionic liquids are also described. The invention demonstrates the feasibility of using phosphonium-based ionic liquids as a reliable reaction media for a wide variety of basic reagents. The problems associated with C-H activation in imidazolium-based ionic liquids by highly reactive bases are not observed for phosphonium-based ionic liquids.