1,3-Diphosphapropenes for novel chemistry of metal complexes
作者:Shigekazu Ito、Hongze Liang、Masaaki Yoshifuji
DOI:10.1016/j.jorganchem.2004.09.045
日期:2005.5
2-Methyl-3,3-diphenyl-l-(2,4,6-tri-t-butylphenyl)-1,3-diphosphapropene was obtained as a chelate ligand for palladium(II) and platinum(II) complexes. Sulfurization of 2-methyl-1,3-diphosphapropene mainly gave 3-thioxo-1,3-diphosphapropene which bears a P=C-P=S skeleton and was used as a ligand of transition-metal complexes. A doubly-sulfurized product of the 1,3-diphosphapropene, 1,3-dithioxo-1,3-diphosphapropene, was isolated and characterized. The palladium(II) complexes containing the ligated 1,3-diphosphapropenes were used for catalytic reactions such as cross-couplings and direct conversion of allyl alcohol to allylaniline. (c) 2004 Elsevier B.V. All rights reserved.