C-H bond activation
Low coordinate iridium NHC complexes derived from selective and reversible C–H bond activation of fluoroarenes
... The reactions of 4 suggest that the high regioselectivity observed in the formation of 2 is thermodynamic in origin, invoking reversible C–H bond activation and the transient presence of 1. ...
5
Mechanisms of C H Bond Activation by Platinum(II)
... and C–H bond ...for C–H activation by transition metal complexes have been identified, including (1) electrophilic activation, (2) oxidative addition, (3) σ-bond ...
142
Design, synthesis and biological evaluation of new substituted benzofuran-based derivatives via C−H bond activation
... (Received 31 December 2019. revised 27 May 2020; accepted 25 June 2020) Abstract: A series of biologically active disubstituted benzofuran derivatives (3a– d) have been designed and synthesized via C-H ...
27
Organometallic Reaction Mechanisms: Olefin Polymerization Catalysis and C H Bond Activation by Early Transition Metal Bisphenolate Complexes and Protonolysis of Bipyrimidine Platinum Methyl Complexes
... chemistry—C-H bond activation, C-P bond cleavage, addition of solvent to ligand—that led to further assembly into oligomeric structures with intricate and unusual ...
308
A Combined Experimental and Computational Study of Ligand Effects on C H Bond Activation by Palladium and Platinum Complexes
... of C-H bonds, especially partial oxidation of methane, represent an important area of current ...of C-H bond activation by transition metals have appeared in the ...that ...
187
Synthesis and Reactivity of Ruthenium Alkyl and Aryl Complexes and Their Application towards Aromatic C-H Bond Activation and Olefin Hydroarylation
... metal-mediated C-H activation step (see below) similar to that directly observed in stoichiometric aromatic C-H oxidative addition ...of C-H bonds to ethylene using 1 as ...
190
Driving forces for covalent assembly of porphyrins by selective C H bond activation and intermolecular coupling on a copper surface
... Computational Details: Density functional theory (DFT) calculations were performed with the Quickstep code [33] within the CP2K package [34], using a mixed Gaussian and plane waves basis set, the Goedecker, Teter and ...
20
Iridium(I) PNP complexes in the sp3 C H bond activation of methyl propanoate and related esters
... 3 C–H activation is generally regarded as a thermodynamically uphill transformation and therefore the thermally robust pincer- type complexes have been among the most attractive and widely studied ...
9
Iridium (Iii) –Hydridocyclometallated-Imine Complexes, As A Result Of C-H Bond Activation In Coordinated Ligand, Spectroscopic Studies
... this bond-activation process, cyclometallation is a highly attractive and versatile synthetic approach for generating organometallic systems, with very important potential (Crabtree, ...mediated ...
6
Tuning the Reactivity of Terminal Nickel(III)?Oxygen Adducts for C?H Bond Activation
... determined activation parameters via the Eyring equation; (c) Kinetic isotope effect for the oxidation of DHA, measured at 25 °C unless otherwise noted; (d) Empirically determined slope of the ...
9
Hydrocarbon C-H activation with Tp[prime]Pt complexes
... of C-H bond activation and functionalization processes on platinum therefore remains pertinent as we strive toward a more efficient catalytic ...
111
Activation of B-H, Si-H, and C-F bonds with Tp′Rh(PMe3) complexes : Kinetics, mechanism, and selectivity
... through C − F, B − H, and Si − H bond activation via photolysis of Tp ′ Rh(PMe 3 )H 2 or thermal reaction with Tp ′ Rh(PMe 3 )(CH 3 )- ...− H and C − H ...
16
{[4 (4 [2,2′]Bipyridyl)phenyl]dimethylphosphine}dichloro(η5 pentamethylcyclopentadienyl)iridium(III)
... Therefore, it would be advantageous to attach a chromophore to an Ir—Cp* dihydride. Efficient energy transfer from the chromophore would activate the Ir—Cp* center. The title compound, (I), possesses a ...
13
Organometallic chemistry using partially fluorinated benzenes
... metals, C–H bond activation reactions of chloro- and bromo-benzene with this pincer are directed and stabilised by halogen atom coordination, ultimately affording ortho-activated ...of ...
38
Investigations into the requirements for homogeneous platinum- and iridium-catalyzed oxidative C-H bond functionalization
... for C-H bond coordination to be kinetically and thermodynamically accessible, it is necessary to design systems in which the ligand being displaced is relatively weakly bound to the platinum(II) ...
225
Dalton Discussion 12: Catalytic C–H and C–X Bond Activation91-97
... of C–H bond activation by transi- tion ...carbon–hydrogen bond energy correla- tions in a series of fluorinated aromatic hydrocarbons (Figure ...catalysed C–C bond ...
7
Utilising sodium-mediated ferration for regioselective functionalisation of fluoroarenes via C-H and C-F bond activations
... some unreacted 4a or by adding an extra equivalent of Na(HMDS) to 4a. Interestingly, contrasting with these results, when diferrated intermediate 4b, whose Fe centres reside at the 1,4-positions of the fluoroaryl anion, ...
5
Cp*Ir Complexes Relevant to C-H Activation and Oxidation Reactions.
... of C-H bonds activation was explored through hydrogen/deuterium exchange between benzene and a variety of deuterated ...of C-H activation varied dramatically based on the nature ...
190
C-C bond-forming reactions of ground-state aryl halides under reductive activation
... 4.2.9. Table 1; entry 9. To a fl ame-dried round-bottomed fl ask was added freshly distilled diisopropylamine (0.1 mL, 0.7 mmol, 1.4 equiv) and anhydrous THF (1 mL) which was put under argon atmosphere and cooled to 78 ...
13
Investigations of C-H and N-H activation with electron deficient iridium pincer complexes
... Although these reactions are all very different, they are initiated generally by one of two pathways. The first pathway involves nucleophilic attack of the reactant on a metal-olefin complex to form an alkyl species. The ...
159