作者:Mehmet Sevim、Serdar Batıkan Kavukcu、Armağan Kınal、Onur Şahin、Hayati Türkmen
DOI:10.1039/d0dt02937h
日期:——
under mild conditions. These complexes were able to perform this catalytic transformation in a short time with low catalyst and base amounts under an air atmosphere. Also, the PdII–nitron complexes (6–9) were applied in the Suzuki–Miyaura C–C coupling reaction and these complexes successfully initiated this reaction in a short time (30 minutes) using the H2O/2-propanol (1.5 : 0.5) solvent system. The
一系列的Ru II(1),铑III(2),IR III(3,4),IR我(5)和Pd II(6-9制备和表征通过) '瞬间卡宾'硝酮的复合物1 H-和13 C-NMR,FT-IR和元素分析。配合物1-4和6的分子结构通过X射线衍射研究确定。在酮与醇的α(α)-烷基化反应中,通过乙胺(α-)烷基化反应评价了配合物(1-9)的催化活性。温和条件下的借用氢战略。这些络合物能够在短时间内在空气气氛下以低催化剂和碱量进行这种催化转化。同样,Pd II-硝基络合物(6-9)用于Suzuki-Miyaura C-C偶联反应,这些络合物使用H 2 O / 2-丙醇(30分钟)在短时间内成功引发了该反应。1.5:0.5)溶剂系统。DFT计算表明,对于该机理,Pd 0 / II / 0途径更为可取。
A new PEPPSI type N-heterocyclic carbene palladium(II) complex and its efficiency as a catalyst for Mizoroki-Heck cross-coupling reactions in water
作者:Dhrubajit Borah、Biswajit Saha、Bipul Sarma、Pankaj Das
DOI:10.1007/s12039-020-1754-y
日期:2020.12
air and moisture stable PEPPSI (PEPPSI: pyridine-enhanced pre-catalyst preparation, stabilisation, and initiation) themed palladium N-heterocyclic carbene (NHC) complex [Pd(L)Br2(Py)] (1) [L: 2-flurobenzyl)-1-(4-methoxyphenyl)-1H-imidazolline-2-ylidene] was synthesized and characterized. The structure of complex 1 was determined by X-ray single-crystal analysis. The palladium center in 1 adopted a square
Depalladation of Neutral Monoalkyne- and Dialkyne-Inserted Palladacycles and Alkyne Insertion/Depalladation Reactions of Cationic Palladacycles Derived from <i>N</i>,<i>N</i>′,<i>N</i>″-Triarylguanidines as Facile Routes for Guanidine-Containing Heterocycles/Carbocycles: Synthetic, Structural, and Mechanistic Aspects
N)Pd(MeCN)2][BF4] (5 and 6) in 89% and 91% yields, respectively. The separate reactions of 4 with 2 equiv of methyl phenylpropiolate (MPP) or diphenylacetylene (DPA) and the reaction of 5 with 2 equiv of MPP in PhCl at 110 °C afforded the guanidine-containing quinazolinium tetrafluoroborate 7 in 25–32% yields. The reaction of 6 with 2 equiv of DPA under otherwise identical conditions afforded the unsymmetrically
Direct electrosynthesis of halo and mixed-halo complexes of palladium(II and IV) by the dissolution of a sacrificial palladium anode in aqueous medium
作者:M.C. Chakravorti、Gampa V.B. Subrahmanyam
DOI:10.1016/s0277-5387(00)83662-1
日期:1992.1
A rapid single-step method for the electrosynthesis of chloro and bromo complexes of palladium(II and IV), viz. M2[PdX4] aid M2[PdX6], by the dissolution of a palladium anode in chloride or bromide containing media is described. Electrolysis of dilute HX solution in the presence of pyridine, 2,2'-bipyridyl or 1,10-phenanthroline gives rise to non-electrolytes, e.g. trans-[PdX2(PY)2], [PdX2(bipy)] and [PdX2(phen)]. Anodic oxidation of palladium in HX medium in the presence of acetonitrile and benzonitrile also gives the non-electrolytes trans-[PdX2(CH3CH2NH2)2] and trans-[PdX2(C6H5CH2NH2)2], respectively.
Gutbier, A.; Krell, A., Chemische Berichte, 1906, vol. 39, p. 620 - 620