Conclusions
The thermal intramolecular dehydrochlorination of p-(3-chloro-3-phthalidyl)diphenyl gave a quite pureβ-phenylanthraquinone in high yield. The pure oligomeric diphenylene phthalides with terminal anthraquinone groups were also isolated.
Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 941–943, April, 1983.
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Kovardakov, V.A., Zolotukhin, M.G., Salazkin, S.N. et al. Synthesis of β- phenylanthraquinone by thermal intramolecular dehydrochlohination of p-(3-chloro-3-phthalidyl)diphenyl. Russ Chem Bull 32, 853–855 (1983). https://doi.org/10.1007/BF00953497
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DOI: https://doi.org/10.1007/BF00953497