Publications associées à Metallacycle

Functionalization of remote C(sp3)-H bonds enabled by copper-catalyzed coupling of O-acyloximes with terminal alkynes

Qian Wang, Jieping Zhu, Ruben Omar Torres Ochoa, Zhaodong Li

Transition metal catalyzed Sonogashira cross-coupling of terminal alkynes with aryl(vinyl) (pseudo)halides has been successfully extended to alkyl halides for the synthesis of functionalized internal alkynes. The direct alkynylation of remote unfunctionali ...

2020

Divergent Synthesis of Densely Substituted Arenes and Pyridines via Cyclotrimerization Reactions of Alkynyl Triazenes

Kay Severin, Nicolai Cramer, Carl Thomas Bormann, Florian Gérald Abela, Jin Fay Tan, Frederick Mark Chadwick

Densely substituted fused aromatic triazenes can be prepared by [2 + 2 + 2] cyclotrimerization reactions of 1-alkynyl triazenes. The Cp*Ru-catalyzed cyclization proceeds well with both simple alkynyl triazenes and tethered 1-diynyl triazenes. Attractively, ...

2019

Dendritic polarizing agents for DNP SENS

David Lyndon Emsley, David Benjamin Roger Antoine Gajan

Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) is an effective method to significantly improve solid-state NMR investigation of solid surfaces. The presence of unpaired electrons (polarizing agents) is crucial for DNP, but it has ...

Royal Soc Chemistry2017

Atomistic Description of Reaction Intermediates for Supported Metathesis Catalysts Enabled by DNP SENS

David Lyndon Emsley, David Benjamin Roger Antoine Gajan

Obtaining detailed structural information of reaction intermediates remains a key challenge in heterogeneous catalysis because of the amorphous nature of the support and/or the support interface that prohibits the use of diffraction-based techniques. Combi ...

2016

Cytotoxicity of ruthenium-arene complexes containing B-ketoamine ligands

Paul Joseph Dyson, Rosario Scopelliti, Catherine Marie Amélie Clavel

New ruthenium(II) arene derivatives (arene = p-cymene, benzene, hexamethylbenzene) containing beta-ketoamine ligands L' (HL' in general; in detail, HLph,ph = (4Z)-3-methyl-4-((phenylamino)(phenyl)methylene)-1-phenyl-1H-pyrazol-5(4H)-one, HLnaph,ph = (4Z)-3 ...

American Chemical Society2013

Gold-Catalyzed Alkynylation: Acetylene-Transfer instead of Functionalization

Jérôme Waser, Jonathan Brand, Yifan Li

Over the last fifteen years, gold has been raised from the status of an inert noble metal to one of the most-often-used catalysts in synthetic chemistry. The functionalization of the triple bond of alkynes has been especially successful in this respect. In ...

Wiley-V C H Verlag Gmbh2013

Direct observation of reaction intermediates for a well defined heterogeneous alkene metathesis catalyst

Frédéric Blanc, David Lyndon Emsley, Rajkumar Singh

Grafting of [W( NAr)(=CHtBu)(2,5-Me2NC4H2)(2)] on a silica partially clehydroxylated at 700 degrees C (SiO2-(700)) generates the corresponding monosiloxy complex [( SiO)W( NAr)(=CHtBu)(2,5-Me2NC4H2)] as the major species (approximate to 90%) along with [( ...

NATL ACAD SCIENCES2008

Light-emitting material.

Michael Graetzel, Mohammad Khaja Nazeeruddin

This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N] 2 ML comprising two orthometalated ligands having imidazole moieties and an ancillary ligand of ²-diketonate type. It has been surprisingl ...

2008

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Metallacycle

Functionalization of remote C(sp3)-H bonds enabled by copper-catalyzed coupling of O-acyloximes with terminal alkynes

Divergent Synthesis of Densely Substituted Arenes and Pyridines via Cyclotrimerization Reactions of Alkynyl Triazenes

Dendritic polarizing agents for DNP SENS

Atomistic Description of Reaction Intermediates for Supported Metathesis Catalysts Enabled by DNP SENS

Nickel-catalyzed Hydrosilylation of Alkenes and Transition-Metal-Free Intermolecular α-C-H Amination of Ethers

Cytotoxicity of ruthenium-arene complexes containing B-ketoamine ligands

Gold-Catalyzed Alkynylation: Acetylene-Transfer instead of Functionalization

Direct observation of reaction intermediates for a well defined heterogeneous alkene metathesis catalyst

Light-emitting material.

Transition metal-catalyzed carbon-carbon cross-coupling reactions using sulfonyl derivatives

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Chattez avec Graph Search

Divergent Synthesis of Densely Substituted Arenes and Pyridines via Cyclotrimerization Reactions of Alkynyl Triazenes

Transition metal-catalyzed carbon-carbon cross-coupling reactions using sulfonyl derivatives

Atomistic Description of Reaction Intermediates for Supported Metathesis Catalysts Enabled by DNP SENS

Functionalization of remote C(sp3)-H bonds enabled by copper-catalyzed coupling of O-acyloximes with terminal alkynes

Dendritic polarizing agents for DNP SENS

Nickel-catalyzed Hydrosilylation of Alkenes and Transition-Metal-Free Intermolecular α-C-H Amination of Ethers

Cytotoxicity of ruthenium-arene complexes containing B-ketoamine ligands

Gold-Catalyzed Alkynylation: Acetylene-Transfer instead of Functionalization

Direct observation of reaction intermediates for a well defined heterogeneous alkene metathesis catalyst

Light-emitting material.