Ligand-Free Copper-Catalyzed Synthesis of Asymmetrical Thioethers by Coupling Aryl or Alkyl Halides Using an Acetyl Thiourea Precursor in Wet Polyethylene Glyol (PEG 400)
摘要:
Asymmetrical diaryl or aryl alkyl thioethers can be prepared in good to excellent yields by coupling the appropriate aryl iodides and aryl or alkyl bromines using acetyl thiourea as a thiolprecursor, Cu2O as a catalyst, KOH as a base, and PEG 400-H2O as a solvent under ligand-free conditions.
Air-stable binuclear Titanium(IV) salophen perfluorobutanesulfonate with zinc power catalytic system and its application to C–S and C–Se bond formation
作者:Lingxiao Wang、Jie Qiao、Jiancong Wei、Zhiwu Liang、Xinhua Xu、Ningbo Li
DOI:10.1016/j.tet.2019.130750
日期:2020.1
An air-stable μ-oxo-bridged binuclear Lewisacid of titanium(IV) salophen perfluorooctanesulfonate [Ti(salophen)H2O}2O][OSO2C4F9]2 (1) was successfully synthesized by the reaction of TiIV(salophen)Cl2 with AgOSO2C4F9 and characterized by techniques such as IR, NMR and HRMS. This complex was stable open to air over a year, and exhibited good thermal stability and high solubility in polar organic solvents
通过反应成功合成了稳定的空气稳定的μ-氧桥双核路易斯酸钛(IV)Salophen全氟辛烷磺酸[Ti(salophen)H 2 O} 2 O] [OSO 2 C 4 F 9 ] 2(1)。AgOSO 2 C 4 F 9制备Ti IV(盐基)Cl 2并通过IR,NMR和HRMS等技术进行表征。该复合物可在一年中稳定地暴露于空气中,并具有良好的热稳定性和在极性有机溶剂中的高溶解度。该配合物还具有相对较强的酸度,强度为0.8
Efficient CS Cross-Coupling of Thiols with Aryl Iodides Catalyzed by Cu(OAc)<sub>2</sub>·H<sub>2</sub>O and 2,2′-Biimidazole
作者:Chenglong Zong、Jianli Liu、Shengyan Chen、Runsheng Zeng、Jianping Zou
DOI:10.1002/cjoc.201300830
日期:2014.3
The classical Ullmann CS crosscoupling reaction of aryl iodides with aromatic/alkyl thiols under catalysis of 15 mol% Cu(OAc)2·H2O and 15 mol% 2,2′‐biimidazole works at 80°C in DMSO for 3 h to provide a variety of aryl sulfides in good to excellent yields.
This invention relates to aryl carbonyl derivatives which are activators of glucokinase which may be useful for the management, treatment, control, or adjunct treatment of diseases, where increasing glucokinase activity is beneficial.
This invention relates to aryl carbonyl derivatives which are activators of glucokinase which may be useful for the management, treatment, control, or adjunct treatment of diseases, where increasing glucokinase activity is beneficial.