The invention comprises the N-acetoacetyl derivative of 1-chloro-2-aminoanthraquinone, and the preparation thereof and of other acetoacetylaminoanthraquinones by heating aminoanthraquinones with diketene in the presence of 90-100 per cent (preferably glacial) acetic acid at 40-80 DEG C. (preferably 60-70 DEG C.). Examples describe the acetoacetylation of 1- and 2-aminoanthraquinone, 1- and 3-chloro-2-aminoanthraquinone and 1-amino - 5 - benzoylaminoanthraquinone, and the di-acetoacetylation of 1 : 5-diaminoanthraquinone. Additional starting materials specified are 1-amino-4-benzoylaminoanthraquinone, 1 - amino - 4 - phenylaminoanthraquinone and 1 : 4 - diaminoanthraquinone. Specification 429,982 is referred to.ALSO:The invention comprises N - acetoacetyl derivatives of 4-benzoylaminodiphenylamine, carbazole, 1-aminobenzene-4-sulphonic acid 21-thiazolylamide, and naphthosultam, and the preparation thereof and of other acetoacetyl-amino compounds by heating a primary or secondary aromatic amine, or a heterocyclic compound containing a secondary nitrogen atom in the heterocyclic nucleus, with diketene in the presence of 90-100 per cent (preferably glacial) acetic acid at 40-80 DEG C. (preferably 60-70 DEG C.). Examples describe the acetoacetylation of the four compounds specified above and of 1-aminobenzene-4-sulphonic acid morpholide and diphenylamine. Additional starting materials specified include benzidine naphthoquinone, 1-aminobenzene-4-sulphonic acid p-phenylanilide and dimethylamide, 4-aminodiphenylsulphone, and N-phenyl-1-and-2-naphthylamine. Specification 429,982 is referred to.
本发明涉及1-氯-2-氨基蒽醌的N-乙酰乙酰衍生物,以及通过在90-100%(优选为冰醋酸)乙酸存在下,在40-80℃(优选为60-70℃)下加热氨基蒽醌和二酮烯制备其他乙酰乙酰氨基蒽醌和1-和2-氨基蒽醌、1-和3-氯-2-氨基蒽醌、1-氨基-5-苯甲酰氨基蒽醌的例子描述,并且对1:5-二氨基蒽醌进行了双乙酰乙酰化。此外,指定了其他起始材料,包括1-氨基-4-苯甲酰氨基蒽醌、1-氨基-4-苯基氨基蒽醌和1:4-二氨基蒽醌。参考专利规格书429,982。
此外,本发明还涉及4-苯甲酰氨基二苯胺、咔唑、1-氨基苯并-4-磺酸21-噻唑酰胺和萘磺酰胺的N-乙酰乙酰衍生物,以及通过在90-100%(优选为冰醋酸)乙酸存在下,在40-80℃(优选为60-70℃)下加热含有二级氮原子的芳香胺或杂环化合物,制备其他乙酰乙酰氨基化合物。例子描述了上述四种化合物和1-氨基苯并-4-磺酸吗啉酰和二苯胺的乙酰乙酰化,指定的其他起始材料包括苯二胺萘醌、1-氨基苯并-4-磺酸对苯基苯胺酰和二甲基酰胺、4-氨基二苯磺酮和N-苯基-1-和2-萘胺。参考专利规格书429,982。