Reactivity of 1-allylsilatrane in ruthenium-catalyzed silylative coupling with olefins-mechanistic considerations
We have developed a new effective route for obtaining (E)-vinyl-substituted silatranes via ruthenium-catalyzed silylative coupling of 1-allylsilatrane with olefins. Experimental research allowed us also to propose the mechanism of the process based on sto
Reactivity of hypervalent species of silicon: cleavage of the allyl-silicon bond
The reactivities of the silicon-allyl bonds in two kinds of pentacoordinated silicon species CH2=CHCH2Si(o-O2C6H4)2-NMe4+ (1) and CH2=CHCH2Si(OCH2CH2)3N (2) has been compared.In the allyl transfer to carbonyl compounds under nucleophilic conditions (NaOMe, KF or Bu4NF) and electrophilic conditions (TiCl4, AlCl3, BF3) these two species show quite different behaviour.Complex 1 is activated by nucleophiles, while for 2 transfer occurs under electrophilic conditions.These results indicate that the reactivity of these species is a function of their overall charge and geometry.
Cerveau, Genevieve,Chuit, Claude,Corriu, Robert J. P.,Reye, Catherine
p. C17 - C20
(2007/10/02)
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