Tetrahedron p. 5455 - 5462 (1997)
Update date:2022-08-02
Topics:
Billert, Thomas
Beckert, Rainer
Fehling, Peer
Doering, Manfred
Goerls, Helmar
An expedient one-pot synthesis via a novel cycloaddition/ring transformation sequence allows the introduction of two arylamino groups and a pyridine substructure on azaquinones. Using 1,4-benzoquinone a twofold regioselective reaction yields the deeply blue colored 2,7-diaza-anthraquinones 8, which could be determinated by NMR spectroscopy. In addition, an X-ray structural analysis of the juglone derivative 11 reveals the regioselective arrangement of the bipyridine subunit into the quinone moiety.
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Doi:10.1021/acs.joc.6b02182
(2016)Doi:10.1021/jf60158a021
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(1997)