Structures, preparation and catalytic activity of ruthenium cyclopentadienyl complexes based on pyridyl-phosphine ligand

Herein, we present (E)-selective transfer semihydrogenation of alkynes based on in situ generated iridium complex from [Ir(COD)Cl]2 and unsymmetrical ferrocene-based phosphine ligand in the presence of formic acid as a hydrogen donor. The catalytic system is distinguished by unprecedented chemoselectivity and exceptional stereoselectivity substantiated by the broad scope of test-ed substrates, including natural products derivatives. The uniform reaction conditions may be applied to various alkynes, owing to a lack of over-reduction. The intriguing difference in catalytic activity between unsymmetrical and symmetrical ferrocene-based ligands was attributed to diver-gent coordination and steric hindrance. The presented methodology constitutes a solution to the common limitations of the published catalytic systems.

Download Full-text

A survey of catalytic activity of .eta.5-cyclopentadienyl complexes of Groups 4-6 and uranium and thorium for the dehydrocoupling of phenylsilane

Organometallics ◽

10.1021/om00109a025 ◽

1989 ◽

Vol 8 (7) ◽

pp. 1732-1736 ◽

Cited By ~ 62

Author(s):

Clare. Aitken ◽

Jean Pierre. Barry ◽

Francois. Gauvin ◽

John F. Harrod ◽

Abdul. Malek ◽

...

Keyword(s):

Catalytic Activity ◽

Cyclopentadienyl Complexes ◽

Complexes Of Groups

Download Full-text

A Ni(0) σ‐Borane Complex of a Rigid Bidentate Borane/Phosphine Ligand: Boryl‐Ni Formation by Oxidative Dehydrochloroborylation and Catalytic Activity for Ethylene Polymerization

Angewandte Chemie ◽

10.1002/ange.202111691 ◽

2021 ◽

Author(s):

Falk William Seidel ◽

Kyoko Nozaki

Keyword(s):

Catalytic Activity ◽

Ethylene Polymerization ◽

Phosphine Ligand

Download Full-text

Mercaptobenzoic acid-palladium(0) complexes as active catalysts for S-benzylation with benzylic alcohols via (η3-benzyl)palladium(ii) cations in water

Organic & Biomolecular Chemistry ◽

10.1039/c4ob00688g ◽

2014 ◽

Vol 12 (31) ◽

pp. 5964-5972 ◽

Cited By ~ 9

Author(s):

Hidemasa Hikawa ◽

Isao Azumaya

Keyword(s):

Catalytic Activity ◽

Catalytic System ◽

Phosphine Ligand ◽

High Catalytic Activity ◽

Benzylic Alcohols

Mercaptobenzoic acid-palladium(0) complexes show high catalytic activity for S-benzylation with benzylic alcohols via the (η3-benzyl)palladium(ii) cation in water. The catalytic system can be performed using only 2.5 mol% Pd2(dba)3 without the phosphine ligand or other additives.

Download Full-text

Highly Functional Group Tolerant, (E)-Selective Transfer Semihydrogenation of Alkynes Catalysed by Iridium Complex Bearing Unsymmetrical Ferrocene-Based Phosphine Ligand

10.26434/chemrxiv-2021-8xqp2 ◽

2021 ◽

Author(s):

Rafał Kusy ◽

Marcin Lindner ◽

Jakub Wagner ◽

Karol Grela

Keyword(s):

Catalytic Activity ◽

Steric Hindrance ◽

Functional Group ◽

Phosphine Ligand ◽

Iridium Complex ◽

Selective Transfer ◽

Reaction Conditions ◽

Catalytic Systems ◽

The Common

Herein, we present (E)-selective transfer semihydrogenation of alkynes based on in situ generated iridium complex from [Ir(COD)Cl]2 and unsymmetrical ferrocene-based phosphine ligand in the presence of formic acid as a hydrogen donor. The catalytic system is distinguished by unprecedented chemoselectivity and exceptional stereoselectivity substantiated by the broad scope of test-ed substrates, including natural products derivatives. The uniform reaction conditions may be applied to various alkynes, owing to a lack of over-reduction. The intriguing difference in catalytic activity between unsymmetrical and symmetrical ferrocene-based ligands was attributed to diver-gent coordination and steric hindrance. The presented methodology constitutes a solution to the common limitations of the published catalytic systems.

Download Full-text