Chiral calix[4]arene-based diphosphites as ligands in the asymmetric hydrogenation of prochiral olefins

被引：36
|
作者：
Marson, Angelica
Freixa, Zoraida
Kamer, Paul C. J.
van Leeuwen, Piet W. N. M. [1 ]
机构：
[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[2] Inst Chem Res Catalonia ICIQ, Tarragona 43007, Spain
[3] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1018 WV Amsterdam, Netherlands
来源：
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2007年 / 29期
关键词：
homogeneous catalysis; stereoselective catalysis; asymmetric hydrogenation; calixarenes; diphosphites;
D O I：
10.1002/ejic.200700764
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Chiral calixarene-based diphosphite ligands 3a-d have been obtained via lower-rim functionalisation of the p-tert-butylcalix[4]arene core. High enantiomeric excesses (up to 94 %) and good activities were obtained in the rhodium-catalyzed asymmetric hydrogenation of prochiral olefins with TADDOL-containing diphosphites 3c,d. This is the first example of chiral calix[4]arene-modified ligands that induce high enantioselectivity in metal-catalysed asymmetric reactions.
引用
收藏
页码：4587 / 4591
页数：5
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