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Paper | Regular issue | Vol 32, No. 12, 1991, pp.2323-2327
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5731
The Synthesis of New Heteropolycyclic Quinolone by Twofold Photocyclization: Methoxycarbonylnaphtho[2”,1”: 2’,3’-b]thieno[4’,5’: 2,3]thieno[5,4-c]quinolin-6(5H)-one

Grace Karminski-Zamola,* Davorka Pavlicic, Miroslav Bajic, and Nikola Blazevic

*Organic Chemistry Department, Faculty of Technology, University of Zagreb, Marulicev trg 20, 41000 Zagreb, Croatia


New heterocyclic ring system namely 12-methoxycarbonylnaphtho[2”1”‘: 2’,3’-b]thieno[4’,5’: 2,3]thieno[5,4-c]quinolin-6(5H)-one (11) is prepared by multistep synthesis introducing twofold photochemical cyclization.