Rhodium–tris(3,5-bis(trifluoromethyl)phenyl)phosphine catalyzed hydroformylation of dienes to dialdehydes in supercritical carbon dioxide with high activity
作者:Shin-ichiro Fujita、Shinya Fujisawa、Bhalchandra M. Bhanage、Masahiko Arai
DOI:10.1016/j.tetlet.2003.10.219
日期:2004.2
Rhodium-catalyzed hydroformylation of 1,5-hexadiene and 1,7-octadiene to corresponding dialdehydes was investigated in compressed CO2 and in toluene using different fluorinated phosphine compounds as ligands. A rhodium complex using tris(3,5-bis(trifluoromethyl)phenyl)phosphine is highly effective in compressed CO2 for double hydroformylation of 1,5-hexadiene, whose TOF value is much larger than those reported so far. It has been shown that this ligand is effective also for the hydroformylation of 1,7-octadiene and scCO(2) is a better solvent than a conventional organic solvent of toluene for the title reaction. (C) 2003 Elsevier Ltd. All rights reserved.