Catalytic asymmetric hydroformylation in the presence of compressed carbon dioxide

被引：50

作者：

Kainz, S ^{[1
]}

Leitner, W ^{[1
]}

机构：

[1] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany

来源：

CATALYSIS LETTERS | 1998年 / 55卷 / 3-4期

关键词：

asymmetric catalysis; hydroformylation; supercritical carbon dioxide; rhodium catalysts;

D O I：

10.1023/A:1019035012829

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The asymmetric hydroformylation of styrene using [(CO)(2)Rh(acac)]/(R, S)-BINAPHOS as catalyst precursor occurs smoothly in the presence of compressed CO2 to give appreciable asymmetric induction (ee = 66% (R)) under conditions close to the critical data of pure CO2, but very low ees are obtained at high CO2 densities. The phase behaviour of the reaction medium and the different solubilities of the unmodified and ligand-modified catalytically active species in the supercritical phase provide a possible rationalisation of the results.

引用

页码：223 / 225

页数：3

共 18 条

[1] ASYMMETRIC HYDROFORMYLATION [J].