申请人:Ciba-Geigy Corporation
公开号:US04189570A1
公开(公告)日:1980-02-19
Process for producing compounds of the formula ##STR1## wherein R is hydrogen, methyl or ethyl, and n is 1 or 2, which process comprises condensing aminohydroxynaphthalenesulphonic acids of the formula ##STR2## with 2,4,6-trifluoro-s-triazine, in an aqueous solution or suspension, within a pH range which is defined by pK.sub.N(R)H .ltoreq.pH.ltoreq.(pK.sub.OH -2) wherein pK.sub.N(R)H and pK.sub.OH are the pK values respectively of the amino group and hydroxyl group of the aminohydroxynaphthalenesulphonic acid and pH is the hydrogen exponent, to give compounds of the formula (1).
生产化合物的过程,其公式为 ##STR1## 其中R为氢,甲基或乙基,n为1或2,该过程包括将公式为 ##STR2## 的氨基羟基萘磺酸与2,4,6-三氟-s-三嗪在水溶液或悬浮液中缩合,在pH范围内进行,该范围由pK.sub.N(R)H .ltoreq.pH.ltoreq.(pK.sub.OH -2)定义,其中pK.sub.N(R)H和pK.sub.OH分别为氨基和氢氧基的pK值,pH为氢指数,以给出公式(1)的化合物。