研究了取代咪唑离子液体 (ILs) 对 Na 12 Ge 17作为模型体系的反应性,该模型系统包含对氧化还原敏感的Zintl簇阴离子。事实证明,ILs 对具有至少被烷基取代的 1,2,3-三取代的咪唑鎓阳离子和阴离子双(三氟甲基磺酰基)氮胺 (TFSI) 具有广泛的惰性。在与此类离子液体长时间接触时观察到的 Na 12 Ge 17的微小转化不是由盐类化合物的溶解引起的,因此没有提供溶解的 Ge 簇。相反,阳离子交换导致 Na +离子转移到溶液中。相反,通过使用二苯甲酮作为氧化剂,Na 12的非均相氧化还原反应Ge 17被引发,将相当一部分的Na +转移到溶液中。在优化条件下,获得了 X 射线无定形产物 NaGe 6.25,它可热转化为几乎完全充满钠的多面体笼的结晶 II 型包合物 Na 24 - δ Ge 136和 α-Ge。因此,所提出的方法提供了对大量 Na 24– δ Ge 136的意外访问。
研究了取代咪唑离子液体 (ILs) 对 Na 12 Ge 17作为模型体系的反应性,该模型系统包含对氧化还原敏感的Zintl簇阴离子。事实证明,ILs 对具有至少被烷基取代的 1,2,3-三取代的咪唑鎓阳离子和阴离子双(三氟甲基磺酰基)氮胺 (TFSI) 具有广泛的惰性。在与此类离子液体长时间接触时观察到的 Na 12 Ge 17的微小转化不是由盐类化合物的溶解引起的,因此没有提供溶解的 Ge 簇。相反,阳离子交换导致 Na +离子转移到溶液中。相反,通过使用二苯甲酮作为氧化剂,Na 12的非均相氧化还原反应Ge 17被引发,将相当一部分的Na +转移到溶液中。在优化条件下,获得了 X 射线无定形产物 NaGe 6.25,它可热转化为几乎完全充满钠的多面体笼的结晶 II 型包合物 Na 24 - δ Ge 136和 α-Ge。因此,所提出的方法提供了对大量 Na 24– δ Ge 136的意外访问。
A highly efficient Cu-catalyst system for N-arylation of azoles in water
作者:Deping Wang、Fuxing Zhang、Daizhi Kuang、Jiangxi Yu、Junhua Li
DOI:10.1039/c2gc35077g
日期:——
6,7-Dihydroquinolin-8(5H)-one oxime (L3) was found to serve as a superior ligand for the CuI-catalyzed N-arylation of imidazoles with aryl iodides, bromides, and electron-deficient chlorides in water. Moreover, the CuI/L3 catalyst system enabled the coupling reactions to take place smoothly with high yields under a low catalyst loading (0.1–1 mol% CuI and 0.2–2 mol% L3).
Mild Conditions for Copper-Catalyzed N-Arylation of Imidazoles
作者:Wenlong Huang、Ke Ding、Huaming Chen、Deping Wang、Xianyang Wang、Qian Cai
DOI:10.1055/s-0029-1218691
日期:2010.5
An efficient copper(I) bromide catalyzed N-arylation of azoles with a variety of aromatic bromides and iodidesunder mild conditions is reported. This reaction displayed great functional group compatibility and excellent reactive selectivity. copper - aryl halides - imidazoles - azoles - N-arylation
Synthesis and Physical Properties of Tunable Aryl Alkyl Ionic Liquids (TAAILs) Comprising Imidazolium Cations Blocked with Methyl‐, Propyl‐ and Phenyl‐Groups at the C2 Position
作者:Harry Biller、Thomas Strassner
DOI:10.1002/chem.202202795
日期:2023.2
Blocking the C2 position of imidazolium-based tunablearylalkylionicliquids (TAAILs) with methyl, propyl and phenyl groups has a strong influence on their physicochemical properties like viscosity and conductivity. Especially the electrochemical window can be enlarged. Electron-donating and -withdrawing substituents on the aryl ring could further change the electron density which has also been analyzed