- A resolvable octaheterohelicene based on the 1,3,4,6-tetraazapentalene ring system
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The fluorescent octaheterohelicene, benzo[h]quinolino- [1,2″1′,2′]imidazo[4′ ,5′ 4,5]imidazo[1,2-a]benzo[h]quinoline (bd]7), has been resolvled by radial chromatography on plates of silica to which (-)-TAPA and (+)-TAPA were covalently bound.
- Pereira, David E.,Neelima,Leonard, Nelson J.
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p. 5895 - 5908
(2007/10/02)
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- Synthesis of 1-Azabenzanthracene: Epimerization with the Use of 1,3-Dihydrobenzo(c)thiophene-S,S Dioxide as a Source of ortho-Quinodimethane
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The cycloaddition of o-quinodimethane, from 1,3-dihydrobenzo(c)thiophene-S,S dioxide, to 5,6-dihydroquinoline yields a mixture of adducts isomeric at the newly created ring junction.The cycloadducts can be dehydrogenated to the fully aromatic 1-azabenzanthracene.
- Akula, Murthy R.,Levy, Louis A.
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p. 2765 - 2772
(2007/10/02)
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- 1-Azabenzanthracene and 9-Azabenzanthracene
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The synthesis of 1-azabenzanthracene and 9-azabenzanthracene are presented.
- Tanga, Mary J.,Almquist, Ronald G.,Smith, Thomas H.,Wu, Helen Y.,Reist, Elmer J.
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p. 1597 - 1598
(2007/10/02)
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