Pt-Catalyzed Hydrosilylation of 1,3-Diynes with Triorganosilanes: Regio- and Stereoselective Synthesis of Mono- or Bis-silylated Adducts
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posted on 2019-01-22, 00:00 authored by Jędrzej Walkowiak, Katarzyna Salamon, Adrian Franczyk, Kinga Stefanowska, Jakub Szyling, Ireneusz KownackiAn
efficient method has been successfully developed for the functionalization
of various 1,3-diynes by the hydrosilylation reaction with triethyl-
or triphenylsilane catalyzed by Pt catalysts (Pt<sub>2</sub>(dvs)<sub>3</sub>, PtO<sub>2</sub>, or Pt(PPh<sub>3</sub>)<sub>4</sub>). Comprehensive
optimization studies were performed for the first time to find suitable
process conditions for the stereo- and regioselective formation of
mono- or bis-silylated adducts from commercially available substrates
and catalysts. Silyl-substituted 1,3-enynes or bis-silyl-functionalized
buta-1,3-dienes were obtained with excellent yields and fully characterized.
