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Manganese(I)-Catalyzed Enantioselective Hydrogenation of Ketones Using a Defined Chiral PNP Pincer Ligand
被引:175
|作者:
Garbe, Marcel
[1
]
Junge, Kathrin
[1
]
Walker, Svenja
[1
]
Wei, Zhihong
[1
]
Jiao, Haijun
[1
]
Spannenberg, Anke
[1
]
Bachmann, Stephan
[2
]
Scalone, Michelangelo
[2
]
Beller, Matthias
[1
]
机构:
[1] Univ Rostock, Leibniz Inst Katalyse eV, Albert Einstein Str 29a, D-18059 Rostock, Germany
[2] F Hoffmann La Roche Ltd, Proc Chem & Catalysis, CH-4070 Basel, Switzerland
关键词:
asymmetric hydrogenation;
chiral alcohols;
chiral pincer ligands;
ketones;
manganese;
ASYMMETRIC TRANSFER HYDROGENATION;
C BOND FORMATION;
P-N-P';
IRON(II) COMPLEXES;
CATALYTIC-HYDROGENATION;
EFFICIENT;
ALCOHOLS;
AMINES;
ALKYLATION;
REDUCTION;
D O I:
10.1002/anie.201705471
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A new chiral manganese PNP pincer complex is described. The asymmetric hydrogenation of several prochiral ketones with molecular hydrogen in the presence of this complex proceeds under mild conditions (30-40 degrees C, 4 h, 30 bar H-2). Besides high catalytic activity for aromatic substrates, aliphatic ketones are hydrogenated with remarkable selectivity (e.r. up to 92:8). DFT calculations support an outer sphere hydrogenation mechanism as well as the experimentally determined stereochemistry.
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页码:11237 / 11241
页数:5
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