PROCESS FOR THE MANUFACTURE OF PURE SUBSTITUTED 2,5-DIARYLAMINOTEREPHTHALATES AND THE CORRESPONDING FREE ACIDS

摘要

1499480 Preparation of 2,5-diarylamino lower alkyl terephthalate HOECHST AG 23 Sept 1976 [24 Sept 1975] 39515/76 Heading C2C In a process for preparing 2,5-diarylamino lower alkyl terephthalate by oxidizing a dihydro-2,5-diarylamino terephthalate with an aromatic nitro compound in the presence of an acid, an improvement comprising oxidizing the dihydro - 2,5 - diarylamino terephthalate with an aromatic nitro compound having the same aromatic radical as the arylamino groups of the dihydro-2,5-diarylamino terephthalate.