954415-94-2Relevant academic research and scientific papers
A new catalytic route to synthesis of silylgermylethynes
Marciniec, Bogdan,?awicka, Hanna,Dudziec, Beata
, p. 235 - 240 (2008/03/14)
Silylgermylethynes known to be potential organometallic reagents and precursors of optoelectronic materials can be efficiently synthesized via a recently reported catalytic method called silylative coupling of alkynes with vinylsilicon compounds. The reaction of triethylethynylgermane with vinyltrisubstituted silanes catalyzed by [RuHCl(CO)(PR3)n] (where R = iPr, Cy, Ph; n = 2-3) under optimal conditions selectively yields respective silylgermylethynes. Silylation of ethynylgermane with divinylsilicon derivatives such as siloxanes, silazanes, bis(silyl)benzene and bis(silyl)ethane gives monoethynylgermyl substituted vinyldisilicon products with high yields and selectivity, however, accompanied by traces of dialkynylgermyl derivatives. All catalytic results as well as those of stoichiometric study on the insertion of ethynylgermane into Ru-Si bond have permitted proposing mechanistic schemes of the reaction examined.
New catalytic route to alkynylgermanes
Marciniec, Bogdan,LAwicka, Hanna,Dudziec, Beata
, p. 5188 - 5192 (2008/10/09)
Vinyl-trisubstituted germanes react selectively with terminal alkynes in the presence of compounds containing Ru-H and Ru-Ge bonds with formation of functionalized alkynylgermanes. The reaction opens the first transition metal catalytic route for the preparation of this class of organogermanes, which are useful reagents for organic synthesis. The mechanism elucidated by NMR spectroscopic study of stoichiometric reactions shows that this process is a new catalytic activation of an sp-hybridized C-H bond involving the previously discovered activation of the =C-Ge bond.
