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Cross-metathesis of vinylsilanes with olefins in the presence of Grubbs’ catalyst

✍ Scribed by Cezary Pietraszuk; Helmut Fischer; Małgorzata Kujawa; Bogdan Marciniec

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
83 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

Effective cross-metathesis of H 2 C C(H)SiR 3 , where SiR 3 =Si(OMe) 3 , Si(OEt) 3 , Si(OSiMe 3 ) 3 , with selected olefins in the presence of (PCy 3 ) 2 Cl 2 Ru( CHPh) (I) is described. Treatment of p-substituted styrenes, 1-alkenes and selected allyl derivatives H 2 C CHCH 2 R% (R%=SiMe 3 , Si(OEt) 3 , Ph, OPh) with an excess of H 2 C C(H)SiR 3 results in the formation of the respective cross-metathesis products with good yields and selectivities. The metallacarbene mechanism of the process is discussed.

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