申请人:Sterling Drug Inc.
公开号:US04396767A1
公开(公告)日:1983-08-02
Novel 4-[4-(substituted-amino)phenyl]- or heteroaryl-2,6-bis(heteroaryl)pyridines which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting a heteroaryl methyl ketone with a 2-R.sub.4 -4-NR.sub.5 R.sub.6 -benzaldehyde or a heteroaryl aldehyde in the presence of ammonia or an ammonia-releasing agent.
本发明涉及一种制备用于压敏无碳复写系统和热标记系统的4-[4-(取代氨基)苯基]-或杂环基-2,6-双(杂环基)吡啶的颜色形成剂,其通过在氨或释放氨剂的存在下,将杂环基甲基酮与2-R.sub.4-4-NR.sub.5 R.sub.6-苯甲醛或杂环基醛反应而制备。