Thermal and spectroscopic studies of the Ag(I) salts with fluorinated carboxylic and sulfonic acid residues
摘要:
Silver(I) salts with RCOOH, where R is CF3(CF2)2, CF3(CF2)6, CF3(CF2)8, C6F5, C6F5CH2, with RSO3H, where R is CF3, CF3(CF2)3, and with HOOC(CF2)3COOH were synthesized. The thermal decomposition processes were studied and the activation energies calculated from thermal data. The decomposition mechanisms and thermal stabilities are discussed. From the IR, and C-13 and F-19 NMR measurements, it is proposed that the carboxylic acid residues have monodentate bonding.
Strong Lewis acid air-stable cationic titanocene perfluoroalkyl(aryl)sulfonate complexes as highly efficient and recyclable catalysts for C–C bond forming reactions
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
Air-stable zirconocene bis(perfluorobutanesulfonate) as a highly efficient catalyst for synthesis of α-aminophosphonates via Kabachnik–Fields reaction under solvent-free condition
Zirconocene bis(perfluorobutanesulfonate) [Cp2Zr(OSO2C4F9)2·2H2O] was successfully synthesized by treatment of Cp2ZrCl2 with C4F9SO3Ag, and was found to have the nature of air-stability, water tolerance, high thermal stability and strong Lewis acidity. This complex showed high catalytic efficiency for the synthesis of α-aminophosphonates via Kabachnik–Fields reaction of aldehydes/ketones, amines and
通过用C 4 F 9 SO 3处理Cp 2 ZrCl 2成功地合成了茂锆双(全氟丁烷磺酸盐)[Cp 2 Zr(OSO 2 C 4 F 9)2 ·2H 2 O]。Ag,并且具有空气稳定性,耐水性,高热稳定性和强路易斯酸性的性质。该络合物在温和无溶剂的条件下,通过Kabachnik-Fields反应醛/酮,胺和亚磷酸二乙酯,显示出对α-氨基膦酸酯合成的高催化效率。此外,在五个周期的测试中,它可以重复使用而不会失去活动。与我们先前报道的Cp 2 Zr(OSO 2 C 8 F 17)2 ·3H 2 O·THF配合物相比,该配合物表现出更好的催化活性。
Air-stable Organoantimony (III) Perfluoroalkyl(aryl)sulfonate complexes as highly efficient, selective, and recyclable catalysts for C–C and C–N bond-forming reactions
A series of air-stable organoantimony (III) perfluoroalkyl(aryl)sulfonate complexes with an azastibocine framework t-BuN(CH2C6H4)2SbOSO2C4F9 (2a); [t-BuN(CH2C6H4)2Sb(OH2)]+[OSO2X]−, [X = C6F5, (2b); C8F17, (2c)]} was synthesized and systematically characterized. These complexes exhibited good thermal stability and relatively strong Lewis acidity. Moreover, they showed high catalytic efficiency, selectivity
一系列空气稳定的有机锑 (III) 全氟烷基 (芳基) 磺酸盐与氮杂阿司匹星骨架 t- BuN(CH 2 C 6 H 4 ) 2 SbOSO 2 C 4 F 9 ( 2a );[ t- BuN(CH 2 C 6 H 4 ) 2 Sb(OH 2 )] + [OSO 2 X] - , [ X = C 6 F 5 , ( 2b ); C 8 F 17 , ( 2c)]} 被合成并系统地表征。这些配合物表现出良好的热稳定性和相对较强的路易斯酸性。此外,它们对 Strecker 反应、曼尼希型反应、醛与酮的交叉缩合以及环氧化物的胺化显示出高催化效率、选择性和可回收性。此类复合物用于扩展七种新型咔唑衍生物的合成,对CHT116细胞和HepG2细胞显示出良好的抑制活性。