Syntheses of Some Alkyl, Cycloalkyl and Aryl3-Aminophenyl Sulfones
SummarySyntheses of alkyl (la-li, lm), cycloalkyl (lj, lk) and aryl (11) 3-aminophenyl sulfones were achieved by ethanolic BPchamp-reduction of the appropriate 3-nitrophenyl sulfones (3a-3m). The alkyl (3a-3i) and cycloalkyl (3j, 3k) 3-nitrophenyl sulfones were prepared via nitration of their respective sulfones (2a-2 k). Methyl (3-nitrophenyl) sulfone (3a) was also prepared by condensation of 3-nitrobenzenesulfinic acid (4) with bromoacetic acid to 3-nitrophenylsulfonylacetic acid (5) followed by decarboxylation.In Erganzung der vor einiger Zeit bekannt gemachten Ergebnisse von Versuchen zur Synthese von Alkyl-, Cycloalkyl-und Aryl-2-aminophenylsulfonen [ 11 wurden Herstellungsmoglichkeiten fur die entsprechenden 3-Aminophenyl-