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Modification of chiral monodentate phosphine ligands (MOP) for palladium-catalyzed asymmetric hydrosilylation of cyclic 1,3-dienes
被引:1
|作者:
Hayashi, T
[1
]
Han, JS
[1
]
Takeda, A
[1
]
Tang, J
[1
]
Nohmi, K
[1
]
Mukaide, K
[1
]
Tsuji, H
[1
]
Uozumi, Y
[1
]
机构:
[1] Kyoto Univ, Grad Sch Sci, Dept Chem, Sakyo Ku, Kyoto 6068502, Japan
关键词:
allylsilane;
asymmetric catalysis;
chiral monodentate phosphine ligands;
hydrosilylations;
palladium;
D O I:
10.1002/1615-4169(20010330)343:3<279::AID-ADSC279>3.3.CO;2-X
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
Several MOP ligands 5 containing aryl groups at 2' position of (R)-2-(diphenylphosphino)-1,1'-binaphthyl skeleton were prepared and used for palladium-catalyzed asymmetric hydrosilylation of cyclic 1,3-dienes 6 with trichlorosilane. Highest enantioselectivity was observed in the reaction of 1,3-cyclopentadiene (6a) catalyzed by a palladium complex (0.25 mol %) coordinated with (R)-2-(di-phenylphosphino)-2'-(3,5-dimethyl-4-methoxyphenyl)-1,1'-binaphthyl (5f), which gave (S)-3-(trichlorosilyl)cyclopentene of 90% ee.
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页码:279 / 283
页数:5
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