Chemistry of Peri-condensed pyrroles. Synthesis of 4H-naphtho[1,4-def]carbazole. A new route to nitrotriphenylenes |
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Authors: | L H Klemm Eliot Hall Sandip K Sur |
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Abstract: | Reaction of 1-nitrotriphenylene ( 7a ) with triethylphosphite (Cadogan reaction) produces 4H-naphtho1,4-def]carbazole, a likely component of fossil fuels. Surprisingly 7a and its 2-isomer are obtained from treatment of triphenylene with sulfuric acid/trifluoroacetic anhydride in nitromethane. Correlation between ultraviolet spectra and substitution reactions in peri-condensed pyrroles and thiophenes is presented. |
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