申请人:Sandoz Ltd.
公开号:US03954743A1
公开(公告)日:1976-05-04
Compounds of the formula ##SPC1## In which X signifies oxygen or =NH, R.sub.1 signifies an alkyl, alkenyl or phenyl radical which is unsubstituted or substituted, R.sub.2 signifies hydrogen or one of the meanings of R.sub.1 or R.sub.1 and R.sub.2 together with the vicinal nitrogen atom form a heterocyclic ring system, R.sub.3 signifies hydrogen, acyl or an alkyl or phenyl radical which is unsubstituted or substituted, and R.sub.4 signifies the atoms needed to complete an aromatic carbocyclic or heterocyclic ring system, And the ring A and chain R.sub.4 are unsubstituted or substituted, Are useful fluorescent dispersion dyestuffs.
分子式为##SPC1##的化合物,其中X表示氧或=NH,R.sub.1表示未取代或取代的烷基,烯基或苯基基团,R.sub.2表示氢或R.sub.1的一种含义,或者R.sub.1和R.sub.2与邻氮原子一起形成杂环环系统,R.sub.3表示氢,酰基或未取代或取代的烷基或苯基基团,R.sub.4表示完成芳香族环或杂环环系统所需的原子,环A和链R.sub.4未取代或取代,是有用的荧光分散染料。