P–C reductive elimination in Ru(II) complexes to convert triarylphosphine ligands into five- or six-membered phosphacycles

Takuya Kuwabara; Takahiro Kato; Kouichi Takano; Shintaro Kodama; Yuuka Manabe; Noriko Tsuchida; Keiko Takano; Yasunori Minami; Tamejiro Hiyama; Youichi Ishii

doi:10.1039/C8CC02539H

P–C reductive elimination in Ru(ii) complexes to convert triarylphosphine ligands into five- or six-membered phosphacycles†

Takuya Kuwabara,

^a Takahiro Kato,^a Kouichi Takano,^a Shintaro Kodama,^a Yuuka Manabe,^b Noriko Tsuchida,^b Keiko Takano,^b Yasunori Minami,^c Tamejiro Hiyama

^c and Youichi Ishii

*^a

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^a Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
E-mail: yo-ishii@kc.chuo-u.ac.jp
Fax: +81-3-3817-1895
Tel: +81-3-3817-1901

^b Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan

^c Research and Development Initiative, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan

Abstract

Rare examples of P–C reductive elimination in ruthenium complexes to generate phosphonium salts are presented. Triarylphosphines are converted into benzophospholium or phosphaphenalenium ligands via cyclometalation and 1,2-insertion of an alkyne followed by P–C reductive elimination. The intermediate in each step was successfully characterized using NMR and X-ray diffraction studies.

Chemical Communications

P–C reductive elimination in Ru(ii) complexes to convert triarylphosphine ligands into five- or six-membered phosphacycles†

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P–C reductive elimination in Ru(II) complexes to convert triarylphosphine ligands into five- or six-membered phosphacycles

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