89807-16-9Relevant academic research and scientific papers
Phosphine-catalyzed synthesis of unsymmetrical 1,3-bis- and trisphosphorus ligands
Lin, Yi,Bernardi, Dan,Doris, Eric,Taran, Frédéric
, p. 1466 - 1470 (2011/04/15)
Phosphine-catalyzed umpolung γ-additions of phosphorus pronucleophiles on alkynes bearing phosphinoyl (P=O) or phosphinothioyl (P=S) moieties have been explored. The reaction leads to bis- or trisphosphorus subunits that can be useful for the preparation of chelating ligands. Georg Thieme Verlag Stuttgart.
Notes Unsymmetrical Bis(phosphorus) Compounds: Synthesis of Unsymmetrical Ditertiary Phosphines, Phosphine Oxides, and Diquaternary Phosphonium Salts
Benn, Roger F.,Briggs, Josie C.,McAuliffe, Charles A.
, p. 293 - 296 (2007/10/02)
A convenient preparative route to the unsymmetrical bidentate phosphines R2P(CH2)nPPh2 (R=Me or Et; n=3 or 4) is described.This involves the synthesis of unsymmetrical diphosphonium salts, Br2, and diphosphine oxides, R2P(O)(CH2)nPPh2, as intermediates.The symmetrical ligand Et2P(CH2)3PEt2 was also prepared by the same route.New co-ordination complexes of manganese(II) with these ligands have been isolated.
