An Iridium Complex with a Phosphine‐Pendant Silyl Ligand as an Efficient Catalyst for the (E)‐Selective Semihydrogenation of Alkynes. Issue 10 (14th March 2022)

• Record Type: Journal Article
• Authors: Shen, Jingfeng; Usui, Ryosuke; Sunada, Yusuke
• Is Part Of: European journal of organic chemistry. Volume 2022:Issue 10(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-03-14
• Subjects: Iridium -- Phosphine pendant -- (E)-Selective hydrogenation -- Semihydrogenation -- Si ligands; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.202101563
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract: Two iridium disilyl complexes that contain phosphine‐pendant silyl groups have been obtained from the reaction of [(cod)IrCl]2 with a disilane with phosphine pendants, (Ph2 PCH2 )R2 Si−SiR2 (CH2 PPh) (R=Me or Ph). The iridium complex with methyl‐substituted silyl moieties showed good catalytic performance in the ( E )‐selective semihydrogenation of various alkynes at room temperature under 1 atm of H2 without over‐reduction to the corresponding alkanes. Abstract : A coordinatively unsaturated iridium complex that contains two chelating silyl‐phosphine ligands, Ir(SiMe2 CH2 PPh2 )2 Cl, has been obtained from the reaction of [(cod)IrCl]2 with the corresponding disilane with phosphine pendants, (Ph2 PCH2 )Me2 Si−SiMe2 (CH2 PPh). This complex shows good catalytic performance in the ( E )‐selective semihydrogenation of various alkynes without over‐reduction to the corresponding alkanes.