The Department of Chemistry and Biology, West Ham College of Technology, London U.K.
The Department of Chemistry and Applied Chemistry, Royal Technical College, Salford, Lancs England
Abstract:
The four monofluoroxanthones substituted in the benzene ring have been prepared by two different routes, namely by cyclisation of the appropriate carboxyfluorodiphenyl ether and by a Balz-Schiemann reaction with the corresponding aminoxanthone.