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Note | Regular issue | Vol 57, No. 10, 2002, pp.1897-1900
Published online, 1st January, 1970
DOI: 10.3987/COM-02-9532
A Photochemical Route to Dibenzonaphthyrones

Yvette A. Jackson* and Karla-Sue C. Marriott

*Department of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica, West Indies


Irradiation of 2-methyl 3-phenyl 5,6-dimethoxy-1-benzofuran-2,3-dicarboxylate (5) gave 2,3-dimethoxybenzopyrano[4,3-c]benzopyran-5,11-dione (1b).