申请人:Sterling Drug Inc.
公开号:US04189171A1
公开(公告)日:1980-02-19
3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.
通过适当的2-(杂环芳基)羧酸苯和适当的苯胺之间的相互作用制备的3-Aryl-3-indolylphthalides、3-aryl-3-pyrrolylphthalides和3-aryl-3-carbazolylphthalides,以及通过适当的2-(吲哚基)羧酸苯和适当的吲哚之间的相互作用制备的3,3-双(吲哚基)邻苯二甲酸酯,在压敏无碳复写系统、热标记系统和电写复印系统中作为显色剂有用。