An Iridium Complex with a Phosphine‐Pendant Silyl Ligand as an Efficient Catalyst for the (<i>E)</i>‐Selective Semihydrogenation of Alkynes

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  • Jingfeng Shen
    Department of Applied Chemistry School of Engineering The University of Tokyo 4-6-1 Komaba, Meguro-ku Tokyo 153-8505 Japan
  • Ryosuke Usui
    Department of Applied Chemistry School of Engineering The University of Tokyo 4-6-1 Komaba, Meguro-ku Tokyo 153-8505 Japan
  • Yusuke Sunada
    Department of Applied Chemistry School of Engineering The University of Tokyo 4-6-1 Komaba, Meguro-ku Tokyo 153-8505 Japan

抄録

<jats:title>Abstract</jats:title><jats:p>Two iridium disilyl complexes that contain phosphine‐pendant silyl groups have been obtained from the reaction of [(cod)IrCl]<jats:sub>2</jats:sub> with a disilane with phosphine pendants, (Ph<jats:sub>2</jats:sub>PCH<jats:sub>2</jats:sub>)R<jats:sub>2</jats:sub>Si−SiR<jats:sub>2</jats:sub>(CH<jats:sub>2</jats:sub>PPh) (R=Me or Ph). The iridium complex with methyl‐substituted silyl moieties showed good catalytic performance in the (<jats:italic>E</jats:italic>)‐selective semihydrogenation of various alkynes at room temperature under 1 atm of H<jats:sub>2</jats:sub> without over‐reduction to the corresponding alkanes.</jats:p>

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