m-Terphenyl Anchored Palladium Diphosphinite PCP-Pincer Complexes That Promote the Suzuki−Miyaura Reaction Under Mild Conditions

2009 ◽  
Vol 28 (1) ◽  
pp. 188-196 ◽  
Author(s):  
Mark C. Lipke ◽  
Robert A. Woloszynek ◽  
Liqing Ma ◽  
John D. Protasiewicz
Keyword(s):  
Pincer Complexes ◽  
Mild Conditions ◽  
Pcp Pincer

scholarly journals H/D Exchange Under Mild Conditions in Arenes and Unactivated Alkanes with C6D6 and D2O Using Rigid, Electron-rich Iridium PCP Pincer Complexes

2020 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel Ess ◽  
Warren Piers
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Room Temperature ◽  
Pincer Complexes ◽  
Synthesis And Characterization ◽  
Hydrogen Isotope Exchange ◽  
Mild Conditions ◽  
Highly Active ◽  
Pcp Pincer

<div>The synthesis and characterization of an iridium polyhydride complex (Ir-H4)</div><div>supported by an electron-rich PCP framework is described. This complex readily loses molecular</div><div>hydrogen allowing for rapid room temperature hydrogen isotope exchange (HIE) at the hydridic</div><div>positions and the α-C-H site of the ligand with deuterated solvents such as benzene-d6, toluene-d8</div><div>and THF-d8. The removal of 1-2 equivalents of molecular H2 forms unsaturated iridium carbene</div><div>trihydride (Ir-H3) or monohydride (Ir-H) compounds that are able to create further unsaturation</div><div>by reversibly transferring a hydride to the ligand carbene carbon. These species are highly active</div><div>hydrogen isotope exchange (HIE) catalysts using C6D6 or D2O as deuterium sources for the</div><div>deuteration of a variety of substrates. By modifying conditions to influence the Ir-Hn speciation,</div><div>deuteration levels can range from near exhaustive to selective only for sterically accessible sites.</div><div>Preparative level deuterations of select substrates were performed allowing for procurement of</div><div>>95% deuterated compounds in excellent isolated yields; the catalyst can be regenerated by</div><div>treatment of residues with H2 and is still active for further reactions.</div>

scholarly journals H/D exchange under mild conditions in arenes and unactivated alkanes with C6D6 and D2O using rigid, electron-rich iridium PCP pincer complexes

2020 ◽  
Vol 11 (39) ◽  
pp. 10705-10717 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel H. Ess ◽  
Benjamin S. Gelfand ◽  
Warren E. Piers
Keyword(s):  
Deuterium Exchange ◽  
Pincer Complexes ◽  
Synthesis And Characterization ◽  
Hydrogen Deuterium Exchange ◽  
Mild Conditions ◽  
Hydrogen Deuterium ◽  
Pcp Pincer

The synthesis and characterization of an iridium polyhydride complex (Ir-H4) supported by an electron-rich PCP framework and capable of mild hydrogen/deuterium exchange catalysis is described.

scholarly journals H/D Exchange Under Mild Conditions in Arenes and Unactivated Alkanes with C6D6 and D2O Using Rigid, Electron-rich Iridium PCP Pincer Complexes

2020 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel Ess ◽  
Warren Piers
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Room Temperature ◽  
Pincer Complexes ◽  
Synthesis And Characterization ◽  
Hydrogen Isotope Exchange ◽  
Mild Conditions ◽  
Highly Active ◽  
Pcp Pincer

<div>The synthesis and characterization of an iridium polyhydride complex (Ir-H4)</div><div>supported by an electron-rich PCP framework is described. This complex readily loses molecular</div><div>hydrogen allowing for rapid room temperature hydrogen isotope exchange (HIE) at the hydridic</div><div>positions and the α-C-H site of the ligand with deuterated solvents such as benzene-d6, toluene-d8</div><div>and THF-d8. The removal of 1-2 equivalents of molecular H2 forms unsaturated iridium carbene</div><div>trihydride (Ir-H3) or monohydride (Ir-H) compounds that are able to create further unsaturation</div><div>by reversibly transferring a hydride to the ligand carbene carbon. These species are highly active</div><div>hydrogen isotope exchange (HIE) catalysts using C6D6 or D2O as deuterium sources for the</div><div>deuteration of a variety of substrates. By modifying conditions to influence the Ir-Hn speciation,</div><div>deuteration levels can range from near exhaustive to selective only for sterically accessible sites.</div><div>Preparative level deuterations of select substrates were performed allowing for procurement of</div><div>>95% deuterated compounds in excellent isolated yields; the catalyst can be regenerated by</div><div>treatment of residues with H2 and is still active for further reactions.</div>

ChemInform Abstract: m-Terphenyl Anchored Palladium Diphosphinite PCP-Pincer Complexes that Promote the Suzuki-Miyaura Reaction under Mild Conditions.

ChemInform ◽  
2009 ◽  
Vol 40 (20) ◽  
Author(s):  
Mark C. Lipke ◽  
Robert A. Woloszynek ◽  
Liqing Ma ◽  
John D. Protasiewicz
Keyword(s):  
Pincer Complexes ◽  
Mild Conditions ◽  
Pcp Pincer

scholarly journals Hydration of nitriles using a metal–ligand cooperative ruthenium pincer catalyst

2019 ◽  
Vol 10 (45) ◽  
pp. 10647-10652 ◽  
Author(s):  
Beibei Guo ◽  
Johannes G. de Vries ◽  
Edwin Otten
Keyword(s):  
Pincer Complexes ◽  
Aromatic Nitriles ◽  
Mild Conditions ◽  
Metal Ligand

The hydration of a broad range of aliphatic and (hetero)aromatic nitriles is reported via catalysis by metal–ligand cooperative Ru pincer complexes under very mild conditions.

ChemInform Abstract: Palladium Bis(phosphinite) “PCP”-Pincer Complexes and Their Application as Catalysts in the Suzuki Reaction.

ChemInform ◽  
2001 ◽  
Vol 32 (2) ◽  
pp. no-no
Author(s):  
Robin B. Bedford ◽  
Sylvia M. Draper ◽  
P. Noelle Scully ◽  
Samantha L. Welch
Keyword(s):  
Suzuki Reaction ◽  
Pincer Complexes ◽  
Pcp Pincer

Isolation and crystallographic characterization of solvate- and anion-stabilized PCP pincer complexes of palladium(II)

2008 ◽  
Vol 693 (8-9) ◽  
pp. 1628-1635 ◽  
Author(s):  
Kian Eang Neo ◽  
Han Vinh Huynh ◽  
Lip Lin Koh ◽  
William Henderson ◽  
T.S. Andy Hor
Keyword(s):  
Pincer Complexes ◽  
Pcp Pincer

Selective C−C vs C−H Bond Activation by Rhodium(I) PCP Pincer Complexes. A Computational Study

2000 ◽  
Vol 122 (29) ◽  
pp. 7095-7104 ◽  
Author(s):  
Andreas Sundermann ◽  
Olivier Uzan ◽  
David Milstein ◽  
Jan M. L. Martin
Keyword(s):  
Bond Activation ◽  
Computational Study ◽  
Pincer Complexes ◽  
Pcp Pincer

ChemInform Abstract: Co(II) PCP Pincer Complexes as Catalysts for the Alkylation of Aromatic Amines with Primary Alcohols.

ChemInform ◽  
2016 ◽  
Vol 47 (48) ◽  
Author(s):  
Matthias Mastalir ◽  
Gerald Tomsu ◽  
Ernst Pittenauer ◽  
Guenter Allmaier ◽  
Karl Kirchner
Keyword(s):  
Aromatic Amines ◽  
Pincer Complexes ◽  
Primary Alcohols ◽  
Pcp Pincer
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