Synthesis and structure of nitro-substituted 6(5H)-phenanthridinones

Andrievskii, A. M.; Poplavskii, A. N.; Dyumaev, K. M.; Bogachev, Yu. S.; Berestova, S. S.

doi:10.1007/bf00519824

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“…The 1 H NMR spectra of 2 a and 2 b were in accordance with those of commercially available samples. The 13 C NMR spectra obtained for 2 c and 2 d [26] and the 1 H NMR spectrum for 2 f [27] were as reported in the literature.…”

Section: Methodsmentioning

confidence: 99%

Oxygen as Oxidant in Palladium-Catalyzed Inter- and Intramolecular Coupling Reactions

Hagelin

Oslob

Åkermark

1999

Chemistry - A European Journal

144

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Facile palladium-catalyzed cyclizations of arylaminoquinones giving biologically important carbazoloquinones in high yields have been performed with oxygen as the single oxidant. By a slight modification of the catalyst, diphenylamine, diphenyl ether, and related compounds can be cyclized. The system could also be used in intermolecular couplings between naphthoquinones and benzene or naphthalene.

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Section: Methodsmentioning

confidence: 99%