A number of 6(5H)‐phenanthridinones have been conveniently prepared from 9‐oxofluorenes through the Schmidt reaction. It has been found that all amino and nitro 9‐oxofluorenes thus far tried gave substituted 6(5H)‐phenanthridinones with the amino or nitro group situated in the benzene ring attached to the nitrogen of the lactam group. UV and IR spectral data are presented for these compounds.
Die Halogenierung von Phenanthridinon (I) mit N‐Chlor‐ oder N‐Brom‐succinimid (II) in Dimethylformamid ergibt die 2‐halogenierten Phenanthridinone (III) in guten Ausbeuten, während die weitere Halogenierung von (III) unter verschärften Bedingungen die Dihalogenverbindungen (IV) nur in niedrigen Ausbeuten liefert.
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