Synthesis and Reactivity of New Pyrazolyl‐Functionalized Potassium Silanides

Autor:	Clemens Krempner, Brian McNerney, Bruce R. Whittlesey
Rok vydání:	2011
Předmět:	Inorganic Chemistry chemistry.chemical_compound Silanes Chemistry Potassium Organic chemistry chemistry.chemical_element Reactivity (chemistry) Medicinal chemistry
Zdroj:	European Journal of Inorganic Chemistry. 2011:1699-1702
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.201001291
Popis:	The pyrazolyl-functionalized oligosilanes Si(SiMe2PzR)4 (2a R = tBu; 2b R = iPr) were prepared by the reaction of 3-R-pyrazole (R = iPr, tBu) with Si(SiMe2Cl)4 in the presence of NEt3. By treatment with tBuOK and 18-crown-6 in THF, 2a, b were converted into the new potassium silanides (PzRMe2Si)3SiK(18-crown-6) (3a R = tBu; 3b R = iPr), respectively. Upon adding W(CO)6 to THF solutions of 3a, b the tungsten complexes [(PzRMe2Si)3SiW(CO)5]K(18-crown-6) (4a R = tBu; 4b R = iPr) were readily formed, whereas upon adding MgBr2 fragmentation occurs leading to the formation of [(PzRMe2Si)2Si-SiMe2]25.
Databáze:	OpenAIRE
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