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2005
Organo-silicon compounds
S 0060
Ru3(CO)12-Catalyzed Silylation of Benzylic C—H Bonds in Arylpyridines and
with Hydrosilanes via C—H Bond Cleavage. — A variety of meth06- 161 Arylpyrazoles
ylphenyl-substituted pyridines, pyrazoles, and a hydrazone are silylated by triethylsilane in the presence of triruthenium catalyst and norbornene as a hydrogen acceptor to
give mono- and/or disilylated products. The method can be also applied to quinoline
(XVI) and bipyridine (XVIII). The results indicate that the coordination of the nitrogen
is important for attaining high efficiency, but coplanar geometry in the C—H bond
cleavage step is not required. — (KAKIUCHI*, F.; TSUCHIYA, K.; MATSUMOTO,
M.; MIZUSHIMA, E.; CHATANI, N.; J. Am. Chem. Soc. 126 (2004) 40,
12792-12793; Dep. Appl. Chem., Fac. Eng., Osaka Univ., Suita, Osaka 565, Japan;
Eng.) — Klein
2005
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