[EN] AZOLIUM AND PURINIUM SALT ANTICANCER AND ANTIMICROBIAL AGENTS<br/>[FR] ANTIMICROBIENS ET ANTINÉOPLASIQUES DE SELS D'AZOLIUM ET DE PURINIUM
申请人:UNIV AKRON
公开号:WO2012149523A1
公开(公告)日:2012-11-01
Singly and multiply charged imidazolium cations (ICs) have been identified as a class of chemical compositions that possess potent antineoplastic, antibacterial and antimicrobial properties. The imidazolium cations disclosed demonstrate greater or equivalent potency towards cancerous cells as the current clinical standard, cisplatin. These imidazolium cations, however, achieve this efficacy without any of the known toxic side effects caused by heavy metal-based antineoplastic drugs such as cisplatin.
Palladium Nanoparticles in Suzuki Cross-Couplings: Tapping into the Potential of Tris-Imidazolium Salts for Nanoparticle Stabilization
作者:Marc Planellas、Roser Pleixats、Alexandr Shafir
DOI:10.1002/adsc.201100574
日期:2012.3
magnetic resonance, transmission electron microscopy, electron diffraction and dynamic light scattering. The new materials proved effective in Suzuki cross‐coupling at a loading of 0.2% palladium. Thus, using a tris‐imidazolium iodide‐palladium material, a series of biaryl products has been prepared starting from aryl bromides and some activated chlorides. The possibility that this catalytic activity might
受各种钯源在咪唑基离子液体中形成纳米颗粒的倾向性的启发,我们现在报道带有十六烷基链和桥连间苯三甲部分的三咪唑盐是有效的钯纳米颗粒稳定剂,是通过钯的Chaudret型氢化有效制备的。双(二亚苄基丙酮)钯(0)。钯纳米粒子已经以纯净形式分离出来,其特征为1H核磁共振,透射电子显微镜,电子衍射和动态光散射。在钯含量为0.2%的情况下,新材料在铃木交叉偶联中被证明是有效的。因此,使用碘化三咪唑鎓钯材料,已从芳基溴化物和一些活化的氯化物开始制备了一系列联芳基产品。这种可能性,这催化活性可能是由于钯n中形成-杂环卡宾已通过固态寻址13 C NMR,并且其中所述酸性2-H用甲基取代的咪唑鎓类似物的合成。
Gold nanoparticles stabilized by PEG-tagged imidazolium salts as recyclable catalysts for the synthesis of propargylamines and the cycloisomerization of γ-alkynoic acids
stabilizers for the preparation of water-soluble gold nanoparticles by reduction of tetrachloroauric acid with sodiumborohydride. The nanomaterials have been characterized. The X-Ray Photoelectron Spectroscopy (XPS) indicated the presence of Au(I) and Au(0) species, the oxidized form being more abundant in the nanomaterial derivedfrom the tris-imidazolium bromide. The catalytic activity of these gold
bonds between the cyclophane and bromide anion in solution. UV spectroscopic titration in acetonitrile at 25°C showed 1:1 complexes between the cyclophanes and halide anions, and the binding constants (Ka) and Gibbs free energy changes (−ΔG°) were calculated according to the modified Benesi–Hildebrand equation. Cyclophane 1·2PF6− exhibits selectiverecognition for F−, Cl−, Br− and I− in acetonitrile