| 摘要 |
Dyestuffs of the formula <IMAGE> IN WHICH R denotes hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl, alkoxy, aralkoxy, aryloxy, alkylamino, aralkylamino, arylamino, acylamino, carboxylic acid ester, carbonamido, acyl, halogen or nitrile, R1 denotes hydrogen, alkyl or aralkyl, R2 denotes hydrogen, alkyl, alkenyl, carbonamide or nitrile, R3 denotes alkyl, alkenyl or aralkyl, R4 denotes hydrogen, alkyl, alkenyl, aralkyl, alkoxy or aralkoxy, alkylamino, aralkylamino, acylamino, carbonamido, nitrile, nitro or halogen, R5 and R6 denote hydrogen, alkyl, aralkyl or a cycloaliphatic 5-membered or 6-membered ring, or R6 together with R1 forms a hydroaromatic 6-membered ring and An(-) represents an anion, and PROCESSES FOR THEIR PREPARATION AND THEIR USE FOR DYEING AND PRINTING NATURAL AND SYNTHETIC MATERIALS.
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