Syntheses of Symmetric and Unsymmetric Bis-imidazole Derivatives Using Phase-Transfer Catalysis
作者:Kun-Peng Zhang、Tian-Qi Jin、Jun-Qiang Zhou、Ting-Ting Ma、Chuan-Ming Jin
DOI:10.1002/jhet.2917
日期:2017.11
unsymmetric bisimidazole derivatives was established. The symmetric bisimidazolylmethane derivatives 1a–9a was prepared with 2‐substituted imidazole derivatives 1–9 as reaction materials. However, the symmetric and unsymmetric bisimidazolylmethane derivatives 10a–12a and 10b–12b was obtained, respectively. With 4‐position with the azo‐groups imidazole derivatives 10–12 were used as reaction materials
New N-heterocyclic carbene ligand precursors H2C(HTzR)2} and H2C(HImR)2} (HTz = 1,2,4-triazole; HIm = imidazole; R = PrSO3 or EtCOO) were obtained starting from the compounds bis(1,2,4-triazol-1-yl)methane and bis(imidazol-1-yl)methane. The related silver(I) carbene complexes were prepared in degassed water solution by treatment of the triazolium or imidazolium species with Ag2O, resulting in well-characterized and water soluble bimetallic complexes of general formula Na2[H2C(TzR)2]2Ag2} and Na2[H2C(ImR)2]2Ag2}. In these metallacycles every silver atom is coordinated to two triazolin- or imidazolin-2-ylidene rings, belonging to two different dicarbene units.
Two cuprous iodide pseudopolymorphs, formulated as [(Cu4I4)(MBI)2]∞ (MBI = 1,1′-methylene-bis(imidazole)) with an irregular cubane-like Cu4I4 cluster as tetrahedrally coordinated secondary building unit and imidazole derivative as bridging ligand, have been synthesized and characterized by single-crystal X-ray diffraction analysis. Both of twocompounds only exhibited a single broad low-energy cluster-centered
两个碘化亚铜假多晶型物,配制成[(Cu 4 I 4)(MBI)2 ] ∞(MBI = 1,1'-亚甲基-双(咪唑)),具有不规则的类似古巴的Cu 4 I 4团簇,作为四面体配位的次级分子通过单晶X射线衍射分析,合成并表征了结构单元和咪唑衍生物作为桥联配体。这两种化合物都仅在室温和77 K之间显示出一个单一的低能级中心3碳原子团发光宽带。特别有趣的是,这两个Cu 4 I 4-咪唑假多晶型物仍显示出源自这种可调单簇中心三重态发射的红移的热致变色发光,与先前报道的Cu 4 I 4-吡啶系统通过平衡温度相关的多次发射(高能和低能量)源自它们在能量上截然不同的三重态。
Mixing divalent ionic liquids: effects of charge and side-chains
作者:Eduards Bakis、Adriaan van den Bruinhorst、Laure Pison、Ivan Palazzo、Thomas Chang、Marianne Kjellberg、Cameron C. Weber、Margarida Costa Gomes、Tom Welton
DOI:10.1039/d1cp00208b
日期:——
We have prepared novel divalent ionic liquids (ILs) based on the bis(trifluoromethylsulfonyl)imide anion where two charged imidazolium groups in the cations are either directly bound to each other or linked by a single atom. We assessed the influence of the side-chain functionality and divalency on their physical properties and on the thermodynamics of mixing. The results indicate that shortening the
[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.