刘磊教授与Leonori教授分别独立报道的Cu催化Suzuki-Miyaura偶联反应(图片来源:参考资料[2]) 2022年,曼彻斯特大学(University of Manchester)的Daniele Leonori教授另辟蹊径,将芳香硼酸频哪醇酯预先转化为反应活性更高的锂盐,后者在[Cu(CH3CN)4]PF6/TMHD(TMHD = 2,2,6,6-四甲基-3,5-庚二酮)的作用下能与非活化...
电感耦合等离子体质谱(ICP-MS)结果显示,DES液体对Cu(OTf)2的溶解度高达0.625 mol/L,比基于FEC的电解液(0.006 mol/L)高出100倍(图3d)。大的溶解度归因于SCN的高极性,它在25oC时的介电常数为55,与传统的液体溶剂相比,SCN具有显著的分离电荷的...
Demir Atli and co-worker, in 2018, synthesized a cationic (NHC)2Cu(I) complex 39 in very good yield by reacting [Cu(CH3CN)4]BF4 with 2 equiv of benzimidazolium salt 38 in the presence of NaOt-Bu (Scheme 14) [28]. The catalytic activity of the complex 39 was studied in the [3 ...
01lNMM/CH3CN,rt.,4 h RRV八F 旦! 。 山HProt 1 0%NaHC03aq./DCM Ph COEl Ph 图1.23用酰氟合成酰胺 (3)酸酐与胺的酰化反应 酸酐与酰卤类似,亦能作胺的酰化剂(反应式如图1—24所示),但酸酐的活性比州 应的酰卤弱。为了使反应顺利进行,可以在反应体系中加入催化剂。常用的催化刹为硫 酸,过氧酸...
Crystal Structures and Vibrational Spectroscopy of [NBu4][Cu(CN)X] (X: Br, I) and [NBu4][Cu3(CN)4]×CH3CN. A new, straightforward, and regioselective method is reported. G. Bowmaker,H. Hartl,V. Urban - ChemInform 被引量: 0发表: 2001年 ...
(I) chloride , Dichloromethane (CH2Cl2) 99.9%, acetonitrile (CH3CN) 99.9%, pyridine 99.9%, propionitrile 99.9%, Diphosphorus pentoxide (P2O5) 98%, Calcium hydride (CaH2) 93%, Dimethyl sulfoxide (DMSO) 99%, were purchased from Merck chemical company and used as received unless otherwise ...
最近的研究表明,以K18F为氟源,铜盐如Cu(OTf)2和Cu(CH3CN)4PF6可实现芳基锡化物、芳基硼化物、二芳基碘代物和芳基C-H的放射性氟化反应。这些体系成功的关键在于Ar-Cu-18F顺利还原消除形成C(sp2)−18F键。这种有机金属机理不同于SNAr反应,由此它可以对缺电子和富电子的芳基均能实现放射性氟化。尽管取得了...
Reacting metal precursors [Fe(CH3CN)2(OTf)2], Ni(ClO4)2路6H2O, and Cu(ClO4)2路6H2O with one equivalent of [13]ane(phenN2)S2 afforded [Fe([13]ane(phenN2)S2)(OTf)2] (1), [Ni([13]ane(phenN2)S2)](ClO4)2 (2(ClO4)2), and [Cu([13]ane(phenN2)S2)(OH2)](ClO4)2 ...
(dmit)2], [(DABCO)H]2[Cu(dmit)2]CH3CN, and BP2DBF[Cu(dmit)2] (1, 2, and 3, respectively, in the works by Naito et al. [23,24]), with n-Bu4N = tetrabutylammonium, BP2DBF2+ = dibenzofuran-2,2 -bis(N-methylene-4,4 -bipyridinium), and DABCO = 1,4-diazabicyclo[2 ....
in abs. CH3CN (8.00 mL) was added triethyl amine (0.385 mL, 280 mg, 2.76 mmol, 9.00 equiv.) and CCl4 (0.281 mL, 449 mg, 2.92 mmol, 9.50 equiv.) under argon atmosphere. After stirring at room temperature overnight, the solvent was removed under vacuum, the resulting crude was ...