Selective Terminal Alkyne Metathesis: Synthesis and Use of a Unique Triple Bonded Dinuclear Tungsten Alkoxy Complex Containing a Hemilabile Ligand

Autor:	Jean-François Paul, André Mortreux, Guy Nowogrocki, Olivier Coutelier
Rok vydání:	2007
Předmět:	Ligand Organic Chemistry Context (language use) Metallacycle Metathesis Combinatorial chemistry Catalysis chemistry.chemical_compound Phenylacetylene chemistry Alkyne metathesis Alkoxy group Organic chemistry Acyclic diene metathesis
Zdroj:	Advanced Synthesis & Catalysis. 349:2259-2263
ISSN:	1615-4169 1615-4150
DOI:	10.1002/adsc.200700104
Popis:	The in situ synthesis of new alkyne metathesis catalysts is described, with particular emphasis on the search for tris-alkoxytungsten-based terminal alkyne metathesis. In that context, hemilabile, ether-containing alkoxy ligands have proved to be suitable and have led to the design and use of a sterically hindered hemilable ligand for the synthesis of a well-defined binuclear, triple-bonded W≡W complex. This complex is shown to be a highly active and selective catalyst precursor for terminal alkyne metathesis, and allows the unprecedented metathesis of phenylacetylene.
Databáze:	OpenAIRE
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