Ancillary Ligand Effects on C−H Bond Activation Reactions Promoted by β-Diiminate Iridium Complexes

2005 ◽  
Vol 24 (25) ◽  
pp. 6250-6259 ◽  
Author(s):  
Wesley H. Bernskoetter ◽  
Emil Lobkovsky ◽  
Paul J. Chirik
Keyword(s):  
Bond Activation ◽  
Iridium Complexes ◽  
Ancillary Ligand ◽  
Ligand Effects

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>

scholarly journals Synthesis and Photoelectric Property of Bis-Cyclometalated Iridium Complexes with 3-Acetyl Camphor as the Ancillary Ligand

2012 ◽  
Vol 70 (8) ◽  
pp. 1028 ◽  
Author(s):  
Juan Jia ◽  
Kaijun Luo ◽  
Yanfang Chen ◽  
Baijing Zhao ◽  
Maowei Li
Keyword(s):  
Photoelectric Property ◽  
Iridium Complexes ◽  
Ancillary Ligand

A coordinatively unsaturated iridium complex with an unsymmetrical redox-active ligand: (spectro)electrochemical and reactivity studies

2019 ◽  
Vol 48 (37) ◽  
pp. 13931-13942 ◽  
Author(s):  
Sebastian Sobottka ◽  
Margarethe Behr van der Meer ◽  
Estelle Glais ◽  
Uta Albold ◽  
Simon Suhr ◽  
...  
Keyword(s):  
Bond Activation ◽  
Iridium Complex ◽  
Iridium Complexes ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Metal Ligand

Metal–ligand cooperativity can be used in iridium complexes with an unsymmetrically substituted redox-active diamidobenzene ligand for bond activation reactions.

scholarly journals Platinum ethylene dimerization catalysts: Diphosphine vs. diimine ancillary ligand effects

Polyhedron ◽  
2020 ◽  
Vol 181 ◽  
pp. 114461
Author(s):  
Suman Debnath ◽  
Sayanti Basu ◽  
Bradley M. Schmidt ◽  
Jeramie J. Adams ◽  
Navamoney Arulsamy ◽  
...  
Keyword(s):  
Ancillary Ligand ◽  
Ethylene Dimerization ◽  
Ligand Effects

Effect of β-Ketoiminato Ancillary Ligand Modification on Emissive Properties of New Iridium Complexes

2019 ◽  
Vol 58 (22) ◽  
pp. 15671-15686 ◽  
Author(s):  
Ewelina Witkowska ◽  
Bartosz Orwat ◽  
Myong Joon Oh ◽  
Gabriela Wiosna-Salyga ◽  
Ireneusz Glowacki ◽  
...  
Keyword(s):  
Iridium Complexes ◽  
Ancillary Ligand ◽  
Ligand Modification
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