The synthesis of novel polycyclic hetero
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Jiann-Kuan Luo; Maria-Paz Cabal; Ronald F. Federspiel; Raymond N. Castle
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Article
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2001
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Journal of Heterocyclic Chemistry
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English
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## Abstract A previously unknown heterocyclic ring system, naphtho[2′,1′:4,5]thieno[2,3‐__c__]naphtho[2,1‐__f__]quinoline (**14**), was synthesized __via__ oxidative photocyclization of 3‐chloro‐__N__‐(2‐phenanthryl)naphtho[1,2‐__b__]‐thiophene‐2‐carboxamide (**9**). Further elaboration of the lact