Phosphinoureas: Cooperative Ligands in Rhodium-Catalyzed Hydroformylation? On the Possibility of a Ligand-Assisted Reductive Elimination of the Aldehyde
作者:Jurjen Meeuwissen、Albertus J. Sandee、Bas de Bruin、Maxime A. Siegler、Anthony L. Spek、Joost N. H. Reek
DOI:10.1021/om901028z
日期:2010.6.14
We report the synthesis of a novel type of phosphinourea ligand, its coordination chemistry with rhodium, its use in the asymmetric hydroformylation of styrene, and investigations on the hydroformylation reaction mechanism. Complex studies on the 2:1 complex of phosphinourea to [Rh(acac)(CO)2] showed that a neutral trans-coordinating complex [Rh(HL-κP)(L-κ2O,P)(CO)] was formed. An anionic O,P-chelating