申请人:BASF Aktiengesellschaft
公开号:US04908447A1
公开(公告)日:1990-03-13
Pyridine compounds of the general formula ##STR1## where one radical X is phenyl and the other radical X is phenyl which is substituted by halogen, cyano, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy or C.sub.1 -C.sub.5 -alkoxycarbonyl, or both radicals X are 4-fluorophenyl, and X.sup.1 is a radical of the formula ##STR2## where R.sup.1 and R.sup.2 independently of one another are each straight-chain or branched alkyl, cyanoalkyl, haloalkyl, aryl or aralkyl having a total of 7 to 14 carbon atoms, or ##STR3## is a 5-membered or 6-membered saturated heterocyclic radical and R.sup.3 is straight-chain or branched C.sub.1 -C.sub.4 -alkyl, are described. The compounds (I) are dye precursors for pressure-sensitive recording systems.
一般式为##STR1##的吡啶化合物,其中一个基团X是苯基,另一个基团X是被卤素、氰基、C.sub.1-C.sub.5烷基、C.sub.1-C.sub.5烷氧基或C.sub.1-C.sub.5烷氧羰基取代的苯基,或者两个基团X均为4-氟苯基,而X.sup.1是式##STR2##的基团,其中R.sup.1和R.sup.2各自独立地是直链或支链烷基、氰基烷基、卤代烷基、芳基或芳基烷基,其总碳原子数为7到14,或者##STR3##是5元或6元饱和杂环基团,而R.sup.3是直链或支链C.sub.1-C.sub.4烷基。这些化合物(I)是压敏记录系统的染料前体。