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
Alkylation of Ketones Catalyzed by Bifunctional Iron Complexes: From Mechanistic Understanding to Application
Cyclopentadienone iron dicarbonyl complexes were applied in the alkylation of ketones with various aliphatic and aromatic ketones and alcohols via the borrowing hydrogen strategy in mild reaction conditions. DFT calculations and experimental works highlight the role of the transition metal Lewis pairs and the base. These iron complexes demonstrated a broad applicability in mild conditions and extended
Borane-Catalyzed, Chemoselective Reduction and Hydrofunctionalization of Enones Enabled by B–O Transborylation
作者:Kieran Nicholson、Thomas Langer、Stephen P. Thomas
DOI:10.1021/acs.orglett.1c00446
日期:2021.4.2
The use of stoichiometric organoborane reductants in organic synthesis is well established. Here these reagents have been rendered catalytic through an isodesmic B–O/B–H transborylation applied in the borane-catalyzed, chemoselectivealkenereduction and formal hydrofunctionalization of enones. The reaction was found to proceed by a 1,4-hydroboration of the enone and B–O/B–H transborylation with HBpin
A Proton‐Responsive Pyridyl(benzamide)‐Functionalized NHC Ligand on Ir Complex for Alkylation of Ketones and Secondary Alcohols
作者:Mandeep Kaur、Noor U Din Reshi、Kamaless Patra、Arindom Bhattacherya、Sooraj Kunnikuruvan、Jitendra K. Bera
DOI:10.1002/chem.202101360
日期:2021.7.21
A Cp*Ir(III) complex (1) of a newly designed ligand L1 featuring a proton-responsive pyridyl(benzamide) appended on N-heterocyclic carbene (NHC) has been synthesized. The molecular structure of 1 reveals a dearomatized form of the ligand. The protonation of 1 with HBF4 in tetrahydrofuran gives the corresponding aromatized complex [Cp*Ir(L1H)Cl]BF4 (2). Both compounds are characterized spectroscopically