Reductive Elimination from Sterically Encumbered Ni-Polypyridine Complexes [0.03%]
受空间位阻影响的镍-多吡啶配合物中的重排消除反应
Craig S Day,Stephanie J Ton,Ryan T McGuire et al.
Craig S Day et al.
Herein we disclose the synthesis of sterically encumbered dialkylnickel(II) complexes bearing 2,9-dimethyl-1,10-phenanthroline ligands. A comparison with their unsubstituted analogues by both X-ray crystallography and theoretical calculatio...
N-Heterocyclic Carbene Complexes of Nickel(II) from Caffeine and Theophylline: Sustainable Alternative to Imidazol-2-ylidenes [0.03%]
来自咖啡因和茶碱的镍(II) N-杂环卡宾配合物：作为咪唑卡宾的可持续替代品
Jin Zhang,Mahbubur Rahman,Qun Zhao et al.
Jin Zhang et al.
Xanthines, such as caffeine and theophylline, are abundant natural products that are often present in foods. Leveraging renewable and benign resources for ligand design in organometallic chemistry and catalysis is one of the major missions ...
Mechanistic Insights into Iron-Catalyzed C-H Bond Activation and C-C Coupling [0.03%]
铁催化C-H键活化和C-C偶联的机制研究
Samantha M Brewer,Timothy M Schwartz,Magy A Mekhail et al.
Samantha M Brewer et al.
Iron-catalyzed C-C coupling reactions of pyrrole provide a unique alternative to the traditional Pd-catalyzed counterpart. However, many details regarding the actual mechanism remain unknown. A series of macrocyclic iron(III) complexes were...
Synthesis of Electrophiles Derived from Dimeric Aminoboranes and Assessing Their Utility in the Borylation of π Nucleophiles [0.03%]
二胺基硼化合物衍生物的亲电试剂合成及其在π-亲核试剂硼化中的应用评估
Clément R P Millet,Jürgen Pahl,Emily Noone et al.
Clément R P Millet et al.
Dimeric aminoboranes, [H2BNR2]2 (R = Me or CH2CH2) containing B2N2 cores, can be activated by I2, HNTf2 (NTf2 = [N(SO2CF3)2]), or [Ph3C][B(C6F5)4] to form isolable H2B(μ-NR2)2BHX (for X = I or NTf2). For X = [B(C6F5)4]- further reactivity,...
Mechanistic Versatility at Ir(PSiP) Pincer Catalysts: Triflate Proton Shuttling from 2-Butyne to Diene and [3]Dendralene Motifs [0.03%]
铱(PsiP)卡宾催化剂的机理多样性： triflate质子穿梭从2-丁炔至二烯和[3]树状分子片段动机
José L Andrés,Elizabeth Suárez,Marta Martín et al.
José L Andrés et al.
The five-coordinate hydrido complex [IrH(OTf)(PSiP)] (1) catalytically transforms 2-butyne into a mixture of its isomer 1,3-butadiene, and [3]dendralene and linear hexatriene dimerization products: (E)-4-methyl-3-methylene-1,4-hexadiene and...
Computational Study on the Co-Mediated Intramolecular Pauson-Khand Reaction of Fluorinated and Chiral N-Tethered 1,7-Enynes [0.03%]
氟代和手性N连接的1,7-炔烃的Pauson-Khand反应的理论研究
Jorge Escorihuela,Lawrence M Wolf
Jorge Escorihuela
The Co2(CO)8-mediated intramolecular Pauson-Khand reaction is an elegant approach to obtain cyclopentenone derivatives containing asymmetric centers. In this work, we employed density functional theory calculations at the M11/6-311+G(d,p) l...
Synthesis and Characterization of New Counterion-Substituted Triacylgermenolates and Investigation of Selected Metal-Metal Exchange Reactions [0.03%]
新型配体取代三酰基锗醇盐的合成与表征及选择性金属交换反应研究
Manfred Drusgala,Matthias Paris,Janine Maier et al.
Manfred Drusgala et al.
The synthetic process to obtain triacylgermenolates with alternated counterions by single-electron-transfer reactions or by a direct approach is described. The formation of these derivatives was confirmed by NMR spectroscopy and UV-vis spec...
Well-Defined Aryl-FeII Complexes in Cross-Coupling and C-H Activation Processes [0.03%]
定义明确的芳基-铁(II)配合物在交叉偶联和C-H活化过程中的作用
Carla Magallón,Oriol Planas,Steven Roldán-Gómez et al.
Carla Magallón et al.
Herein we explore the intrinsic organometallic reactivity of iron embedded in a tetradentate N3C macrocyclic ligand scaffold that allows the stabilization of aryl-Fe species, which are key intermediates in Fe-catalyzed cross-coupling and C-...
Borylated Cymantrenes and Tromancenium Salts with Unusual Reactivity [0.03%]
具有特殊反应性的硼化半边梅烯和脱氢半边梅盐离子化合物
Reinhard Thaler,Holger Kopacka,Klaus Wurst et al.
Reinhard Thaler et al.
In continuation of our study of the chemistry of cationic (cycloheptatrienyl)(cyclopentadienyl)manganese(I) sandwich complexes, so-called "tromancenium" salts, we report here on their boron-substituted derivatives focusing on useful boron-m...
John A Seed,Lisa Vondung,Ralph W Adams et al.
John A Seed et al.
We report the synthesis and characterization of uranium(IV) and thorium(IV) mesoionic carbene complexes [An{N(SiMe3)2}2(CH2SiMe2NSiMe3){MIC}] (An = U, 4U and Th, 4Th; MIC = {CN(Me)C(Me)N(Me)CH}), which represent rare examples of actinide me...