Hydrosilylierung von symmetrisch disubstituierten Alkinen und Butadiinen mit L2Ni(0)-Butadiin-Komplexen [L  Ph3P, (o-Tol-O)3P] als Katalysatoren

Autor:	Annegret Tillack, Uwe Rosenthal, H. Baudisch, Wolfgang Baumann, K. Kortus, Siegmar Pulst
Rok vydání:	1997
Předmět:	Silanes Hydrosilylation Allene Organic Chemistry Nuclear magnetic resonance spectroscopy Mass spectrometry Biochemistry Medicinal chemistry Catalysis Inorganic Chemistry chemistry.chemical_compound chemistry Benzene derivatives Materials Chemistry Organic chemistry Physical and Theoretical Chemistry
Zdroj:	Journal of Organometallic Chemistry. 532:117-123
ISSN:	0022-328X
DOI:	10.1016/s0022-328x(96)06734-4
Popis:	The hydrosilylation of nPrCCnPr, PhCCPh, Me3SiCCSiMe3, PhCCCCPh, 1BuCCCC1Bu and Me3SiCCCz.tbnd;CSiMe3 with Ph2SiH2, PhMe2SiH and Et3SiH in the presence of L2Ni(0)-butadiyne catalysts [L = Ph3P, (o-Tol-O)3p] has been studied. In all cases the hydrosilylation proceeds via a cis-addition of the silanes. The disubstituted alkynes (nPrCCnPr, PhCCPh) give hydrosilylated ethene, butadiene and hexatriene derivatives as well as non-hydrosilylated benzene derivatives. In the case of Me3SiCCSiMe3 no reaction was observed. The hydrosilylation of disubstituted butadiynes proceeds stepwise to give at first the 1,2-adducts. In dependence on the butadiynes either a 1,4-addition (1BuCCCC1Bu, Me3SiC;CCCSiMe3) to the corresponding allene derivatives (11, 13, 15) or a 3.4-addition (PhCCCCPh) to the 1,3-butadiene 19 takes place subsequently. The reaction products were characterized by mass spectrometry. IR and NMR spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31e31109bee332036078e81e8b3fad9f https://doi.org/10.1016/s0022-328x(96)06734-4 Zobrazit plný text záznamu Full Text from ScienceDirect