申请人:Ciba-Geigy Corporation
公开号:US04506073A1
公开(公告)日:1985-03-19
The invention relates to chromenoazaindolizines of the general formula ##STR1## wherein each of Y, X.sub.1 and X.sub.2 independently of the other is hydrogen, halogen, lower alkyl, lower alkanoylamino or a group of the formula ##STR2## each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of the other is hydrogen, C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxy, cyano or lower alkoxy, or is cycloalkyl, phenyl, benzyl, or phenyl or benzyl each substituted by halogen, nitro, lower alkyl or lower alkoxy, or each pair of substituents (R.sub.1 and R.sub.2) and (R.sub.3 and R.sub.4) independently of the other, together with the nitrogen atom to which said pair is attached, is a 5- or 6-membered heterocyclic radical; and each of the rings A and B independently of the other is unsubstituted or substituted by halogen, nitro, lower alkyl, lower alkoxy, phenyl, phenoxy, or by an amino group which is unsubstituted or mono- or di-substituted by lower alkyl, phenyl, lower alkanoyl or benzyl. These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and produce lightfast blue, greenish-blue or green colorations.
本发明涉及通式##STR1##的色诺吖嗪吲哚衍生物,其中Y、X.sub.1和X.sub.2中的每一个独立于其他的是氢、卤素、较低烷基、较低烷酰氨基或通式##STR2##的基团,R.sub.1、R.sub.2、R.sub.3和R.sub.4中的每一个独立于其他的是氢、未被卤素、羟基、氰基或较低烷氧基取代的C.sub.1 -C.sub.12烷基,或是环烷基、苯基、苄基,或是被卤素、硝基、较低烷基或较低烷氧基取代的苯基或苄基,或每对取代基(R.sub.1和R.sub.2)和(R.sub.3和R.sub.4)独立于其他的,与所连接的氮原子一起,形成5-或6-成员杂环基;环A和环B中的每一个独立于其他的是未被取代或被卤素、硝基、较低烷基、较低烷氧基、苯基、苯氧基取代,或者是未被取代或被较低烷基、苯基、较低烷酰基或苄基单取代或双取代的氨基团。这些化合物特别适用于作为压敏或热敏记录材料中的显色剂,并产生光牢度良好的蓝色、青蓝色或绿色着色。