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Catalytic Asymmetric Oxidative γ-Coupling of α, β-Unsaturated Aldehydes with Air as the Terminal Oxidant
被引:31
作者:
Naesborg, Line
[1
]
Corti, Vasco
[1
]
Leth, Lars Astrup
[1
]
Poulsen, Pernille H.
[1
]
Jorgensen, Karl Anker
[1
]
机构:
[1] Aarhus Univ, Dept Chem, DK-8000 Aarhus, Denmark
关键词:
asymmetric catalysis;
organocatalysis;
oxidative coupling;
single-electron transfer;
synthetic methods;
ALPHA;
BETA-UNSATURATED ALDEHYDES;
DIENAMINE CATALYSIS;
ALKYLATION;
ACTIVATION;
ORGANOCATALYSIS;
RADICALS;
OLEFINS;
ETHERS;
ENALS;
D O I:
10.1002/anie.201711944
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A novel concept for catalytic asymmetric coupling reactions is presented. Merging organocatalysis with single-electron oxidation by using a catalytic amount of a copper(II) salt and air as the terminal oxidant, we have developed a highly stereoselective carbon-carbon oxidative coupling reaction of alpha, beta-unsaturated aldehydes. The concept relies on the generation of a dienamine intermediate, which is oxidized to an open-shell activated species that undergoes highly selective gamma-homo- and gamma-heterocoupling reactions. In the majority of examples presented, only a single stereoisomer was formed.
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页码:1606 / 1610
页数:5
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