Brønsted Acid Promoted Reduction of Tertiary Phosphine Oxides. Issue 14 (9th June 2017)

• Record Type: Journal Article
• Authors: Krachko, Tetiana; Lyaskovskyy, Volodymyr; Lutz, Martin; Lammertsma, Koop; Slootweg, J. Chris
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 643:Issue 14(2017)
• Page Start: 916
• Page End: 921
• Publication Date: 2017-06-09
• Subjects: Reduction -- Triphenylphosphine oxide -- Brønsted acid -- 1, 1, 3, 3‐Tetramethyldisiloxane -- Poly(methylhydrosiloxane); Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201700125
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : Recently, Brønsted acids, such as phosphoric acids, carboxylic acids, and triflic acid, were found to catalyze the reduction of phosphine oxides to the corresponding phosphines. In this study, we fully characterize the HCl, HOTf, and Me2 SiHOTf adducts of triphenylphosphine oxide and find that the thermally stable adduct Ph3 POH + OTf – is efficiently converted into triphenylphosphine at 100 °C in the presence of readily available hydrosiloxanes. Under the same reaction conditions, also Ph3 POSiMe2 H + OTf – selectively affords triphenylphosphine indicating that silylated phosphine oxides are likely intermediates in this process. Abstract :