Bimolecular Coupling Reactions through Oxidatively Generated Aromatic Cations: Scope and Stereocontrol.
Bimolecular Coupling Reactions through Oxidatively Generated Aromatic Cations: Scope and Stereocontrol.
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DOI:
10.1016/j.tet.2013.05.011
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发表时间:
2013-09-09
期刊:
影响因子:
2.1
通讯作者:
Floreancig, Paul E.
中科院分区:
文献类型:
--
作者:
Cui, Yubo;Villafane, Louis A.;Clausen, Dane J.;Floreancig, Paul E.
Chromenes, isochromenes, and benzoxathioles react with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone to form stable aromatic cations that react with a range of nucleophiles. These oxidative fragment coupling reactions provide rapid access to structurally diverse heterocycles. Conducting the reactions in the presence of a chiral Brønsted acid results in the formation of an asymmetric ion pair that can provide enantiomerically enriched products in a rare example of a stereoselective process resulting from the generation of a chiral electrophile through oxidative carbon–hydrogen bond cleavage.
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