PROCESS FOR THE PRODUCTION OF 3- (4-OXY-ANILINE) -CARBAZOL DERIVATIVES AS WELL AS 3- (4-OXY-ANILINE) -9-ETHYL-CARBAZOLE AND 3- (4-OXYLANILINE) CARBAZOL SO PRODUCED, AND APPLICATION OF COMPOSED MENTIONS

摘要

The process for the preparation of a 3-(4-hydroxyanilino)carbazole of the formula IMAGE wherein R is hydrogen, alkyl having 1 to 8 carbon atoms or halogenoalkyl having 1 to 8 carbon atoms, comprising reacting a 3-aminocarbazole of the formula IMAGE with p-hydroquinone or p-aminophenol or a mixture of p-hydroquinone and p-aminophenol in at least stoichiometric amounts by heating to a temperature of 150 DEG to 300 DEG C. with exclusion of oxygen.