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Trapping of Cp*W(NO)(eta(2)-PhC CH), the key intermediate in the C-H activation of alkanes by Cp*W(NO)(CH2SiMe3)(CPh=CH2)

TitleTrapping of Cp*W(NO)(eta(2)-PhC CH), the key intermediate in the C-H activation of alkanes by Cp*W(NO)(CH2SiMe3)(CPh=CH2)
Publication TypeJournal Article
Year of Publication1997
AuthorsLegzdins, P, Lumb, SA
JournalOrganometallics
Volume16
Pagination1825-1827
Date PublishedApr
Type of ArticleArticle
ISBN Number0276-7333
KeywordsHYDROXO COMPLEXES, MILD, REACTIVITY
Abstract

Thermolysis of the vinyl nitrosyl complex Cp*W(NO)(CH2SiMe3)(CPh=CH2) (1) in ethyl acetate or acetonitrile affords the oxa- or azametallacycles Cp*W(NO)(eta(2)-OC(Me)(OEt)CH=CPh) (2) or Cp*W(NO)(eta(3)-HNC(Me)=NC(=CH2)CH=CPh) (3) and Cp*W(NO)(OH)(eta(2)-HN=C(Me)CH=CPh) (4), respectively. Kinetic and mechanistic studies provide compelling evidence for a pathway involving initial rate-limiting unimolecular elimination of SiMe4 from 1 with concomitant formation of Cp*W(NO)(eta(2)-CPh=CH), (A).

URL<Go to ISI>://A1997WX03000005