Solvent-Controlled Selectivity toward Exclusive C−C or C−H Bond Activation by a Cationic Metal Center

1999 ◽  
Vol 121 (18) ◽  
pp. 4528-4529 ◽  
Author(s):  
Boris Rybtchinski ◽  
David Milstein
Keyword(s):  
Bond Activation ◽  
Metal Center

Cooperative Bond Activation and Catalytic Reduction of Carbon Dioxide at a Group 13 Metal Center

2015 ◽  
Vol 127 (17) ◽  
pp. 5187-5191 ◽  
Author(s):  
Joseph A. B. Abdalla ◽  
Ian M. Riddlestone ◽  
Rémi Tirfoin ◽  
Simon Aldridge
Keyword(s):  
Carbon Dioxide ◽  
Bond Activation ◽  
Catalytic Reduction ◽  
Metal Center ◽  
Group 13

scholarly journals Metal–metal cooperative bond activation by heterobimetallic alkyl, aryl, and acetylide PtII/CuI complexes

2020 ◽  
Vol 11 (21) ◽  
pp. 5494-5502 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada-Wheelaghan ◽  
Sandra L. Aristizábal ◽  
Robert R. Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Bond Activation ◽  
Metal Center ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
Selective Formation ◽  
Organoplatinum Compounds

The selective formation of heterobimetallic PtII/CuI complexes demonstrates how facile bond activation processes can be achieved by altering the reactivity of common organoplatinum compounds through their interaction with another metal center.

Cooperative Bond Activation and Catalytic Reduction of Carbon Dioxide at a Group 13 Metal Center

2015 ◽  
Vol 54 (17) ◽  
pp. 5098-5102 ◽  
Author(s):  
Joseph A. B. Abdalla ◽  
Ian M. Riddlestone ◽  
Rémi Tirfoin ◽  
Simon Aldridge
Keyword(s):  
Carbon Dioxide ◽  
Bond Activation ◽  
Catalytic Reduction ◽  
Metal Center ◽  
Group 13

Insertion of Sc+ into H2: The First Example of Cluster-Mediated .sigma.-Bond Activation by a Transition Metal Center

1994 ◽  
Vol 116 (21) ◽  
pp. 9710-9718 ◽  
Author(s):  
John E. Bushnell ◽  
Paul R. Kemper ◽  
Philippe Maitre ◽  
Michael T. Bowers
Keyword(s):  
Transition Metal ◽  
Bond Activation ◽  
Metal Center ◽  
Sigma Bond

Some Problems in the Oxidative Addition and Binding of an Ethylene to a Transition Metal Center.

1987 ◽  
Vol 6 (4) ◽  
pp. 902-902
Author(s):  
Jerome Silestre ◽  
Maria Calhorda ◽  
Roald Hoffman ◽  
Page Stoutland ◽  
Robert Bergman
Keyword(s):  
Transition Metal ◽  
Oxidative Addition ◽  
Metal Center

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

Imine as a Linchpin Approach for Distal C(sp2)–H Functionalization

2020 ◽  
Author(s):  
Sukdev Bag ◽  
Sadhan Jana ◽  
Sukumar Pradhan ◽  
Suman Bhowmick ◽  
Nupur Goswami ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Bond Activation ◽  
Bond Formation ◽  
Ancillary Ligand ◽  
Significant Challenge ◽  
Site Selectivity ◽  
Directing Group ◽  
Covalently Linked ◽  
Complex Organic ◽  
Post Functionalization

<p>Despite the widespread applications of C–H functionalization, controlling site selectivity remains a significant challenge. Covalently attached directing group (DG) served as an ancillary ligand to ensure proximal <i>ortho</i>-, distal <i>meta</i>- and <i>para</i>-C-H functionalization over the last two decades. These covalently linked DGs necessitate two extra steps for a single C–H functionalization: introduction of DG prior to C–H activation and removal of DG post-functionalization. We introduce here a transient directing group for distal C(<i>sp<sup>2</sup></i>)-H functionalization <i>via</i> reversible imine formation. By overruling facile proximal C-H bond activation by imine-<i>N</i> atom, a suitably designed pyrimidine-based transient directing group (TDG) successfully delivered selective distal C-C bond formation. Application of this transient directing group strategy for streamlining the synthesis of complex organic molecules without any necessary pre-functionalization at the distal position has been explored.</p>

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