Aza-polycyclic aromatic hydrocarbons: 1—Elucidation of the regiochemistry of 1,2,3,4-tetrahydroazabenz-[a]anthracene-7,12-diones by long-range carbon–proton coupling constants |
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Authors: | Arthur Haber Bruce D Hilton |
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Abstract: | The 13C NMR spectra of 5,8-quinolinedione, 6-chloro-5,8-quinolinedione and 7-chloro-5,8-quinolinedione have been examined in detail. Utilization of long-range proton-carbon coupling constants have allowed the unambiguous identification of the regioisomeric 8-aza-1,2,3,4-tetrahydrobenza]anthracene-7,12-dione and 11-aza-1,2,3,4-tetrahydrobenza]anthracene-7,12-dione. |
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