Hydroformylation of 1,5-Hexadiene Catalyzed by Rhodium Complexes in Supercritical Carbon Dioxide and in Toluene: Effects of Fluorinated Phosphane Ligands and Reaction Conditions
作者:Shin-ichiro Fujita、Shinya Fujisawa、Bhalchandra M. Bhanage、Yutaka Ikushima、Masahiko Arai
DOI:10.1002/ejoc.200300746
日期:2004.7
Rhodium-catalyzed hydroformylation of 1,5-hexadiene to dialdehydes was investigated in compressed CO2 and in toluene using different fluorinated phosphane compounds as ligands at a temperature of 60 °C. Product yields depend greatly on the ligand used and, of the ligands examined, tris[3,5-bis(trifluoromethyl)phenyl]phosphane is the most effective for the production of dialdehydes both in supercritical
在 60 °C 的温度下,使用不同的氟化膦化合物作为配体,在压缩的 CO2 和甲苯中研究了铑催化的 1,5-己二烯加氢甲酰化反应生成二醛。产品收率在很大程度上取决于所使用的配体,在所检测的配体中,三[3,5-双(三氟甲基)苯基]膦对于在超临界 CO2 (scCO2) 和甲苯中生产二醛最有效。随着 CO2 压力的增加,二醛的总产率在约 9 MPa 处通过最小值,并且随着 scCO2 中 H2 压力的增加而显着增加。合成气 (H2/CO) 和 H2 压力对 scCO2 反应的影响与甲苯不同。有人建议 scCO2 促进加氢甲酰化反应。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany,