Synthesis and Characterization of Novel Aminophosphine Ligands Based on Ferrocenodecaline Backbones

被引：0
|
作者：
Max Weißenbacher
Thomas Sturm
Hermann Kalchhauser
Christoph Kratky
Walter Weissensteiner
机构：
[1]  Institut für Organische Chemie,
[2] Universität Wien,undefined
[3] A-1090 Wien,undefined
[4] Austria,undefined
[5]  Institut für Chemie,undefined
[6] Universität Graz,undefined
[7] A-8010 Graz,undefined
[8] Austria,undefined
来源：
Monatshefte für Chemie / Chemical Monthly | 2002年 / 133卷
关键词：
Keywords. Aminophosphines; Asymmetric catalysis; Ferrocene; Grignard cross coupling; Variable temperature NMR; X-Ray diffraction.;
D O I：
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学科分类号：
摘要：
 Novel aminophosphine ligands for enantioselective transition metal catalysts based on different ferroceno cis- and trans-decaline backbones were synthesized and structurally characterized. Their palladium dichloride complexes were tested in the asymmetric Grignard cross coupling reaction of vinyl bromide and phenylethyl magnesium chloride, but only very low enantioselectivities were obtained. Steric strain in the aminophosphine ligands causes a severe backbone deformation and in addition leads to a slowed rotation of the respective dimethylamino group as was detected by variable temperature NMR spectroscopy.
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页码：991 / 1009
页数：18
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