Tandem Hydrosilylation/o-C-H Silylation of Arylalkynes Catalyzed by Ruthenium Bis(silyl) Aminophosphine Complexes

Takeo Kitano, Takashi Komuro, Rikima Ono, Hiromi Tobita

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

An unprecedented reaction via consecutive trans-selective hydrosilylation and o-C-H silylation of arylalkynes with hydrosilanes was developed by use of ruthenium complex catalysts Ru{ΰ3(Si,O,Si)-xantsil}(CO)(PR3) (R = NC4H8 (1-Pyrr), NC5H10 (1-Pip); xantsil = (9,9-dimethylxanthene-4,5-diyl)bis(dimethylsilyl)). This reaction proceeded with gentle heating at 40-60 °C and afforded novel 2,α-bis-silylated (Z)-stilbene or (Z)-styrene derivatives 2 together with an equimolar amount of (E)-/(Z)-arylalkenes as byproducts. The selectivity of the formation of 2 reached a maximum by employing catalyst 1-Pyrr ligated by the less bulky triaminophosphine P(NC4H8)3 and hydrosilane HSiMe(OSiMe3)2 having moderately bulky and electron withdrawing substituents.

Original languageEnglish
Pages (from-to)2710-2713
Number of pages4
JournalOrganometallics
Volume36
Issue number15
DOIs
Publication statusPublished - 2017 Aug 14

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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