Abstract. Depending on the reaction conditions N-hydroxy-phthalimide affords on treatment with cyanogen bromide via N-cyanato phthalimide 2 the iminocarbonate 3 and isatoic acid derivatives 7 and 16. Both tho latter react with nucleophiles as isatoic acid derivatives activated on the carboxylic group and protected on the carbamic group or vice vcrsa, famishing N, N-bis alkoxycnrbonyl anthranilic acid amides 9, N-alkoxycarbonyl anthranilic ...
