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Structure–Reactivity Relationship in Alkane Metathesis Using Well‐Defined Silica‐Supported Alkene Metathesis Catalyst Precursors
Author(s) -
Blanc Frédéric,
ThivolleCazat Jean,
Basset JeanMarie,
Copéret Christophe
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800864
Subject(s) - alkene , metathesis , alkane , catalysis , chemistry , salt metathesis reaction , alkyl , organic chemistry , reactivity (psychology) , polymerization , medicine , alternative medicine , pathology , polymer
Alkane metathesis can be performed by using well‐defined silica‐supported alkene metathesis catalyst precursors as long as the coordination sphere of the metal centre contains both alkyl and alkylidene groups, such as in [(SiO)Mo(NAr)(CH t Bu)(CH 2 t Bu)]. This system transforms mainly linear alkanes, from propane to hexane, into their lower and higher homologues. Mechanistic studies clearly show that alkene metathesis is a key step of this reaction and also suggest that this system is a single‐site single‐component system, namely, alkenes are formed and transformed on one site, which is in contrast to that observed with a mixture of catalysts.