Rhenium( VII ) Oxide/Aluminum Oxide: More Experimental Evidence for an Oxametallacyclobutane Intermediate and a Pseudo‐Wittig Initiation Step in Olefin Metathesis | Zendy

Salameh Alain | Zendy; Copéret Christophe | Zendy; Basset JeanMarie | Zendy; Böhm Volker P. W. | Zendy; Röper Michael | Zendy

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Rhenium( VII ) Oxide/Aluminum Oxide: More Experimental Evidence for an Oxametallacyclobutane Intermediate and a Pseudo‐Wittig Initiation Step in Olefin Metathesis

Author(s) -

Salameh Alain,

Copéret Christophe,

Basset JeanMarie,

Böhm Volker P. W.,

Röper Michael

Publication year - 2007

Publication title -

advanced synthesis and catalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.541

H-Index - 155

eISSN - 1615-4169

pISSN - 1615-4150

DOI - 10.1002/adsc.200600440

Subject(s) - chemistry , wittig reaction , metathesis , allylic rearrangement , propene , rhenium , salt metathesis reaction , reactivity (psychology) , catalysis , medicinal chemistry , olefin fiber , organic chemistry , photochemistry , polymerization , medicine , alternative medicine , pathology , polymer

Reactivity studies of the rhenium( VII ) oxide/aluminum oxide olefin metathesis catalyst with various olefins show that initiation does not require an olefin with an allylic CH bond, and therefore probably takes place via a pseudo‐Wittig reaction. While it does not react with ethene in the absence of propene, Re 2 O 7 /Al 2 O 3 catalyses the self‐metathesis of Z ‐stilbene and its cross‐metathesis with ethene. Additionally, reaction of Re 2 O 7 /Al 2 O 3 with Z ‐2‐butene followed by 13 C di‐labelled ethene shows that it contains only 2 % of active sites.

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