Efficient and Recyclable RuCl
<sub>3</sub>
⋅ 3H
<sub>2</sub>
O Catalyst Modified with Ionic Diphosphine for the Alkoxycarbonylation of Aryl Halides
作者:Qing Zhou、Lei Liu、Wen‐Di Guo、Wen‐Yu Liang、Yong Lu、Ye Liu
DOI:10.1002/open.201800266
日期:2019.2
robustness, and good availability was found to be an efficient and recyclable catalyst for the alkoxycarbonylation of arylhalides. The L4‐based RuCl3 ⋅ 3H2O system corresponded to the best conversion of PhI (96 %) along with 99 % selectivity to the target product of methyl benzoate as well as the good generality to alkoxycarbonylation of different arylhalides (ArX, X=I and Br) with alcohols MeOH, EtOH, i‐PrOH
Columnar thermotropic mesophases formed by dimeric liquid-crystalline ionic liquids exhibiting large mesophase ranges
作者:Yanan Gao、John M. Slattery、Duncan W. Bruce
DOI:10.1039/c1nj20715f
日期:——
tetrafluoroborate (BF4−) anions exhibit hexagonal columnar (Colh) liquid crystal mesophases, with the dimeric materials showing mesophases over an extended temperature range. The effect of the linking chain, alkyl substituents, and anion type on the thermal properties of these dimers was examined and showed a significant influence. For example, Colh mesophases were only observed for ionic liquids having
Synthesis, structure and dynamics of NHC-based palladium macrocycles
作者:Rhiann E. Andrew、Adrian B. Chaplin
DOI:10.1039/c3dt52578c
日期:——
a Ag2O based transmetallation strategy, cationic palladium(II) chloride complexes [PdClCNC–(CH2)n}][BArF4] (n = 8, 10, 12; ArF = 3,5-C6H3(CF3)2) were prepared and fully characterised in solution, by NMR spectroscopy and ESI-MS, and in the solid-state, by X-ray crystallography. The smaller macrocyclic complexes (n = 8 and 10) exhibit dynamic behaviour in solution, involving ring flipping of the alkyl
制备了一系列基于双(咪唑鎓)二甲基吡啶盐与八-,十-和十二-亚甲基间隔基的大环CNC夹钳原配体,并研究了它们的配位化学。使用基于Ag 2 O的金属转移策略,阳离子氯化钯(II)络合物[PdCl CNC-(CH 2)n }] [BAr F 4 ](n = 8,10,12 ; Ar F = 3,5-C制备了6 H 3(CF 3)2)并在溶液中通过NMR光谱和ESI-MS进行了全面表征,并在固态下通过X射线晶体学进行了全面表征。较小的大环配合物(n= 8和10)在溶液中表现出动态行为,涉及烷基间隔基在Pd-Cl键上的环翻转,这是通过可变温度NMR光谱法进行询问的。在固态中,观察到扭曲的配位几何结构,并且间隔基偏向Pd-Cl键的一侧。相反,对于基于十二亚甲基的大环化合物,观察到静态的C 2对称结构。为了进行比较,还制备了钯(II)氟化物类似物[PdF CNC–(CH 2)n }] [BAr F
SURFACTANTS AND POLYMERIZABLE SURFACTANTS BASED ON ROOM-TEMPERATURE IONIC LIQUIDS THAT FORM LYOTROPIC LIQUID CRYSTAL PHASES WITH WATER AND ROOM-TEMPERATURE IONIC LIQUIDS
申请人:Gin L. Douglas
公开号:US20080029735A1
公开(公告)日:2008-02-07
A modular surfactant architecture based on room temperature ionic liquids (RTILs) has been developed that affords non-polymerizable and polymerizable amphiphiles that form lamellar (L), hexagonal (H) or bicontinuous cubic (Q) LLC phases when mixed with water or RTILs serving as the polar solvent. The amphiphiles are imidazolium salts having two or more imidazolium head groups joined by one or more spacers. Polymerization of the LLC assembly can produce polymeric materials having ordered nanopores, with the ordering of the pores determined by the LLC phase.
Compounds and Methods for Treating Cancer and Diseases of the Central Nervous System
申请人:Gupta Ajay
公开号:US20110319459A1
公开(公告)日:2011-12-29
Disclosed are compounds of the general formula (I):
TC
n
D (I),
compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.