Stereodivergent Formation of Alkenylsilanes: syn or anti Hydrosilylation of alkynes catalyzed by a cyclopentadienylcobalt(I) chelate bearing a pendant phosphane tether

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Original languageEnglish
Pages (from-to)833-836
Number of pages4
JournalAdvanced Synthesis and Catalysis
Volume348
Issue number7-8
Publication statusPublished - 5 May 2006

Abstract

The hydrosilylation of alkynes is catalyzed by the di-tert- butylphosphanylethylcyclopentadienyl-cobalt chelate 1. While the reaction of internal alkynes exclusively affords syn hydrosilylation products with triethylsilane, the reaction with triethoxysilane shows predominant anti stereoselectivity. Reactions of terminal alkynes are less selective with triethylsilane and result in cyclotrimerization when triethoxysilane is used.

Keywords

    Alkynes, Cobalt, Hydrosilylation, P ligands, Triethoxysilane, Triethylsilane

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Stereodivergent Formation of Alkenylsilanes: syn or anti Hydrosilylation of alkynes catalyzed by a cyclopentadienylcobalt(I) chelate bearing a pendant phosphane tether. / Yong, Li; Kirleis, Karin; Butenschön, Holger.
In: Advanced Synthesis and Catalysis, Vol. 348, No. 7-8, 05.05.2006, p. 833-836.

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abstract = "The hydrosilylation of alkynes is catalyzed by the di-tert- butylphosphanylethylcyclopentadienyl-cobalt chelate 1. While the reaction of internal alkynes exclusively affords syn hydrosilylation products with triethylsilane, the reaction with triethoxysilane shows predominant anti stereoselectivity. Reactions of terminal alkynes are less selective with triethylsilane and result in cyclotrimerization when triethoxysilane is used.",
keywords = "Alkynes, Cobalt, Hydrosilylation, P ligands, Triethoxysilane, Triethylsilane",
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T1 - Stereodivergent Formation of Alkenylsilanes

T2 - syn or anti Hydrosilylation of alkynes catalyzed by a cyclopentadienylcobalt(I) chelate bearing a pendant phosphane tether

AU - Yong, Li

AU - Kirleis, Karin

AU - Butenschön, Holger

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N2 - The hydrosilylation of alkynes is catalyzed by the di-tert- butylphosphanylethylcyclopentadienyl-cobalt chelate 1. While the reaction of internal alkynes exclusively affords syn hydrosilylation products with triethylsilane, the reaction with triethoxysilane shows predominant anti stereoselectivity. Reactions of terminal alkynes are less selective with triethylsilane and result in cyclotrimerization when triethoxysilane is used.

AB - The hydrosilylation of alkynes is catalyzed by the di-tert- butylphosphanylethylcyclopentadienyl-cobalt chelate 1. While the reaction of internal alkynes exclusively affords syn hydrosilylation products with triethylsilane, the reaction with triethoxysilane shows predominant anti stereoselectivity. Reactions of terminal alkynes are less selective with triethylsilane and result in cyclotrimerization when triethoxysilane is used.

KW - Alkynes

KW - Cobalt

KW - Hydrosilylation

KW - P ligands

KW - Triethoxysilane

KW - Triethylsilane

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