Palladium(<scp>ii</scp>) complexes with a phosphino-oxime ligand: synthesis, structure and applications to the catalytic rearrangement and dehydration of aldoximes
diffraction methods, were active in the catalytic rearrangement of aldoximes. In particular, using 5 mol% complex 1, a large variety of aldoximes could be cleanly converted into the corresponding primary amides at 100 °C, employing water as solvent and without the assistance of any cocatalyst. Palladium nanoparticles are the active species in the rearrangement process. In addition, when the same reactions
的[的PdCl治疗2(COD)](COD = 1,5-环辛二烯)用在二氯甲烷中1个2当量的2-(二苯基膦基)苯甲醛肟在室温下导致的[的PdCl选择性形成2 κ 2 - (P,ñ)-2-PH 2 PC 6 H ^ 4 CH NOH}](1)和[钯κ 2 - (P,ñ)-2-PH 2 PC 6 H ^ 4 CH NOH} 2 ] [CL]图2(2)分别代表Pd(II)含有膦-肟配体的配合物。这些化合物的结构已通过X射线衍射法充分证实,在醛肟的催化重排中具有活性。尤其是,使用5摩尔%的络合物1,无需水或任何助催化剂的辅助,即可在100℃下将多种醛肟干净地转化为相应的伯酰胺。钯纳米粒子是重排过程中的活性物质。另外,当使用乙腈作为溶剂进行相同的反应时,观察到醛肟的选择性脱水以形成各自的腈。为了进行比较,还简要地评估了肟衍生的四环化合物的催化行为。
Synthesis and catalytic applications of ruthenium(<scp>ii</scp>)–phosphino-oxime complexes
In this work, the preparation of the first rutheniumcomplexes containing a phosphino-oxime ligand is presented. Thus, the reaction of cis-[RuCl2(DMSO)4] (3) with 2.4 equivalents of 2-Ph2PC6H4CHNOH (1) in refluxing THF led to the clean formation of the octahedral ruthenium(II) derivative cis,cis,trans-[RuCl2κ2-(P,N)-2-Ph2PC6H4CHNOH}2] (5), whose structure was unambiguously confirmed by means of a
在这项工作中,提出了含有膦-肟配体的第一种钌配合物的制备方法。因此,顺式-[RuCl 2(DMSO)4 ](3)与2.4当量的2-Ph 2 PC 6 H 4 CH NOH(1)在回流THF中的反应导致八面体钌(II)的干净形成。衍生物的顺式,顺式,反式-将[RuCl 2 κ 2 - (P,ñ)-2-PH 2 PC 6 H ^ 4 CHNOH} 2 ](5),其结构通过单晶X射线衍射研究得到明确证实。复杂5也可以由二聚[的RuCl(μ-Cl)的(η的反应合成的6 -对异丙基苯甲烷)} 2 ](4)与过量的1在回流的甲苯中。的治疗4与2个当量的1,在CH 2氯2在室温,也允许的半夹心的Ru(制备II)衍生物将[RuCl κ 2 - (P,Ñ)-2-PH 2 PC 6 ħ4 CHNOH}(η 6 -对异丙基苯甲烷)] [PF 6 ]( 6)。另外,络合物5和6被证明是醛糖肟重排成伯酰胺以及
Ni(<scp>ii</scp>) complexes of the phosphine-oxime Ph<sub>2</sub>PC<sub>6</sub>H<sub>4</sub>-2-CHNOH
作者:Debashis Basu、Toby J. Woods、Thomas B. Rauchfuss
DOI:10.1039/c8dt01551a
日期:——
solution and structural chemistry of nickel(II) complexes of the phosphine-oxime Ph2PC6H4-2-CHNOH (PCHNOH). PCHNOH invariably binds in a bidentate manner as illustrated by cis-Ni(PCHNOH)2Cl2 and cis-[Ni(PCHNOH)2]2+ (as its BF4− salt). Treatment of PCHNOH with Ni(OAc)2(H2O)4 gave charge-neutral trans-[Ni(PCHNO)2]0. Treatment of trans-[Ni(PCHNO)2]0 with BF3 gave [Ni(PCHNO)2BF2]BF4. The cation features a planar
Mild and efficient copper-catalyzed N-arylation of alkylamines and N–H heterocycles using an oxime-phosphine oxide ligand
作者:Lei Xu、Di Zhu、Fan Wu、Rongliang Wang、Boshun Wan
DOI:10.1016/j.tet.2005.04.053
日期:2005.7
A mild and efficient copper-catalyzed system for N-arylation of alkylamines and N-H heterocycles with aryl iodides using a novel, readily prepared and highly stable oxime-functionalized phosphine oxide ligand was developed. The coupling reactions could even be performed in solvent-free conditions with moderate to good yields. (c) 2005 Elsevier Ltd. All rights reserved.
Nikitidis, Antonios; Andersson, Carlaxel, Phosphorus, Sulfur and Silicon and the Related Elements, 1993, vol. 78, # 1-4, p. 141 - 152