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2004
Organo-silicon compounds
S 0060
Regio- and Stereoselective Enyne Cross Metathesis of Silylated Internal Alkynes.
A highly regio- and stereoselective cross metathesis reaction between silylated al51- 144 —
kynes and functionalized alkenes is described. With various functionalized 1-alkenes,
single stereoisomers with high Z-selectivity are obtained. In general, alkenes with a
longer distance between the double bond and the heteroatom substituent give better
efficiency in the cross metathesis reaction. The selectivity is assumed to be a result of
the steric and stereoelectronic effect of the silyl group. — (KIM, M.; PARK, S.;
MAIFELD, S. V.; LEE*, D.; J. Am. Chem. Soc. 126 (2004) 33, 10242-10243; Dep.
Chem., Univ. Wis., Madison, WI 53706, USA; Eng.) — Bartels
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