174390-35-3Relevant academic research and scientific papers
A Mild One-Pot Reduction of Phosphine(V) Oxides Affording Phosphines(III) and Their Metal Catalysts
Kapu?niak, ?ukasz,Plessow, Philipp N.,Trzybiński, Damian,Wo?niak, Krzysztof,Hofmann, Peter,Jolly, Phillip Iain
supporting information, p. 693 - 701 (2021/04/06)
The metal-free reduction of a range of phosphine(V) oxides employing oxalyl chloride as an activating agent and hexachlorodisilane as reducing reagent has been achieved under mild reaction conditions. The method was successfully applied to the reduction of industrial waste byproduct triphenylphosphine(V) oxide, closing the phosphorus cycle to cleanly regenerate triphenylphosphine(III). Mechanistic studies and quantum chemical calculations support the attack of the dissociated chloride anion of intermediated phosphonium salt at the silicon of the disilane as the rate-limiting step for deprotection. The exquisite purity of the resultant phosphine(III) ligands after the simple removal of volatiles under reduced pressure circumvents laborious purification prior to metalation and has permitted the facile formation of important transition metal catalysts.
Enantioselective rhodium-catalyzed hydrogenation of enol carbamates in the presence of monodentate phosphines
Enthaler, Stephan,Erre, Giulia,Junge, Kathrin,Michalik, Dirk,Spannenberg, Anke,Marras, Fabrizio,Gladiali, Serafino,Beller, Matthias
, p. 1288 - 1298 (2008/02/08)
The rhodium-catalyzed asymmetric hydrogenation of different acyclic and cyclic enol carbamates to give optically active carbamates has been examined in the presence of chiral monodentate ligands based on a 4,5-dihydro-3H-dinaphthophosphepine motif 4. The
Enantioselective hydrogenation of β-ketoesters with monodentate ligands
Junge, Kathrin,Hagemann, Bernhard,Enthaler, Stephan,Oehme, Guenther,Michalik, Manfred,Monsees, Axel,Riermeier, Thomas,Dingerdissen, Uwe,Beller, Matthias
, p. 5066 - 5069 (2007/10/03)
Efficient and stable chiral monodentate phosphine ligands can be used in the ruthenium-catalyzed enantioselective hydrogenation of β-ketoesters (see scheme). The catalysts are remarkably temperature-tolerant, and enantioselectivities of up to 95% ee are possible, even at 100-120 °C. R = C6H5, p-CH3OC6H4, p-CF3OC6H4, iPr, Et, C6D 5.
Novel Atropisomeric Phosphorus Ligands: 4,5-Dihydro-3H-dinaphthophosphepine Derivatives
Gladiali, Serafino,Dore, Antonio,Fabbri, Davide,Lucchi, Ottorino De,Manassero, Mario
, p. 511 - 514 (2007/10/02)
Atropisomerically pure (S)-4-phenyl-4,5-dihydro-3H-dinaphthophosphepine 2b has been obtained by resolution of the racemic compound with an enantiopure palladium complex and its absolute cofiguration has been determined by X-ray analysis; it
