申请人:BASF Aktiengesellschaft
公开号:US04667020A1
公开(公告)日:1987-05-19
Compounds of the formula ##STR1## where X is a 5-membered heterocyclic structure from the oxazole, oxadiazole, thiazole, thiadiazole, imidazole or triazole series, Y is a radical of the formula ##STR2## the rings A, B and C can be further substituted and can be fused to a benzene ring, R.sup.1 and R.sup.2 are each hydrogen or unsubstituted or substituted alkyl, aralkyl or cycloalkyl, or R.sup.1 and R.sup.2 together with the nitrogen are piperidino, pyrrolidino or morpholino, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, cycloalkyl, aralkyl, acyl, alkoxycarbonyl, aryloxycarbonyl or arylsulfonyl, and R.sup.4 is hydrogen, alkyl or cycloalkyl, are particularly useful as dyes in liquid-crystalline media.
式为##STR1##的化合物,其中X是来自噁唑、噁二唑、噻唑、噻二唑、咪唑或三唑系列的5元杂环结构,Y是式为##STR2##的基团,环A、B和C可以进一步取代并可以融合到苯环中,R.sup.1和R.sup.2分别是氢或未取代或取代的烷基、芳基烷基或环烷基,或R.sup.1和R.sup.2连同氮可以是哌啶基、吡咯烷基或吗啉基,R.sup.3是氢或未取代或取代的烷基、环烷基、芳基烷基、酰基、烷氧羰基、芳氧羰基或芳基磺酰基,而R.sup.4是氢、烷基或环烷基。这些化合物在液晶介质中作为染料特别有用。