In SituGeneration of Molybdenum-Based ...
Document type :
Article dans une revue scientifique
DOI :
Permalink :
Title :
In SituGeneration of Molybdenum-Based Catalyst for Alkyne Metathesis: Further Developments and Mechanistic Insights
Author(s) :
Geng Lopez, Joaquin [Auteur]
Zaranek, Maciej [Auteur]
Pawluc, Piotr [Auteur]
Gauvin, Regis [Auteur]
Mortreux, Andre [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Zaranek, Maciej [Auteur]
Pawluc, Piotr [Auteur]
Gauvin, Regis [Auteur]
Mortreux, Andre [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Journal title :
Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles
Volume number :
71
Pages :
20
Publication date :
2016-04-05
HAL domain(s) :
Chimie/Catalyse
Chimie/Chimie de coordination
Chimie/Chimie de coordination
English abstract : [en]
Molybdenum-based catalysts are among the best candidates to achieve alkyne metathesis. They can be either well-defined carbynes, previously synthesized before their use, but also prepared in situ upon using stable molybdenum ...
Show more >Molybdenum-based catalysts are among the best candidates to achieve alkyne metathesis. They can be either well-defined carbynes, previously synthesized before their use, but also prepared in situ upon using stable molybdenum carbonyl complexes, or high oxidation state molybdenum salts that need a previous alkylation, both type of precursors being “activated” by hydroxyl-containing compounds such as phenols and silanols. This paper is presenting studies made on these systems, directed towards the knowledge of the reaction paths leading to the active species, and in particular to define the essential role of hydroxyl-containing co-catalyst in the formation of the active species, still ill-defined. From an analysis of the byproducts formed during the reaction, as well as of the initial products, reaction paths to access catalytic carbyne species is suggested, where the ligand environment consists of phenoxy (or siloxy) groups, typically required and identified to lead to alkyne metathesis in the case of well-defined catalysts.Show less >
Show more >Molybdenum-based catalysts are among the best candidates to achieve alkyne metathesis. They can be either well-defined carbynes, previously synthesized before their use, but also prepared in situ upon using stable molybdenum carbonyl complexes, or high oxidation state molybdenum salts that need a previous alkylation, both type of precursors being “activated” by hydroxyl-containing compounds such as phenols and silanols. This paper is presenting studies made on these systems, directed towards the knowledge of the reaction paths leading to the active species, and in particular to define the essential role of hydroxyl-containing co-catalyst in the formation of the active species, still ill-defined. From an analysis of the byproducts formed during the reaction, as well as of the initial products, reaction paths to access catalytic carbyne species is suggested, where the ligand environment consists of phenoxy (or siloxy) groups, typically required and identified to lead to alkyne metathesis in the case of well-defined catalysts.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse de polymérisation
Catalyse et synthèse éco-compatible (CASECO)
Méthodologie organométallique pour la catalyse homogène (MOCAH)
Catalyse et synthèse éco-compatible (CASECO)
Méthodologie organométallique pour la catalyse homogène (MOCAH)
Submission date :
2019-09-25T14:04:31Z