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JOURNAL OF ORGANIC CHEMISTRY
卷 75, 期 12, 页码 3993-4003出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo100122d
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The asymmetric synthesis of a range of axially chiral 2-arylpyridines by a cobalt-catalyzed [2 + 2 + 2] cycloaddition reaction is described. The use of a planar chiral (1-neomenthylindenyl)cobalt(COD) complex under photochemical conditions is the key for reacting the 1-naphthyldiynes with a range of differently functionalized nitriles, giving the enantiomeric atropoisomers with high chemical yields and enantiomcric excesses of up to 94% ee.
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