Formation of allylsilanes from
Cl2[P(C6H11)3]2Ru
C(R)H and vinylsilanes—β-SiR′3
elimination from ruthenacyclobutanes as a terminating step in olefin
cross-metathesis
Abstract
Stoichiometric reactions of the Grubbs carbene complex
[Cl2{P(C6H11)3}
2RuC(Ph)H] with vinylsilanes,
H2C
C(SiMenR3−n
)H (R = Ph, OEt; n = 1, 2, 3), afford
metathesis products and allylsilanes formed by β-SiR3
elimination followed by reductive elimination; the formation of
allylsilanes constitutes a terminating step in the Ru-catalysed
cross-metathesis of olefins with methylsubstituted vinylsilanes.