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Addition von Phthalidnatrium an 2-Carbäthoxy-8-methoxynaphthochinon; eine neue Synthese für Hydroxy-naphtacenchinone |
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| Authors: | W. Trueb C. H. Eugster |
| Abstract: | A simple method to synthesize hydroxysubstituted naphthacenequinones is described. Phthalide anion adds to negatively substituted quinones, e.g. ethyl-8-methoxy-naphthatquinone-2-carboxylate. Acid catalysed cyclisation of this adduct under simultaneous decarboxylation yields a substituted naphthacene quinone. |
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