申请人:——
公开号:US04211872A1
公开(公告)日:1980-07-08
Substituted furopyridinones and furopyrazinones which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting diphenylamines with substituted benzoyl (or 3-indolylcarbonyl)pyridinecarboxylic acids and substituted benzoyl (or 3-indolylcarbonyl)pyrazinecarboxylic acids, respectively.
取代的呋吡啉酮和呋吡嗪酮可作为压敏无碳复写系统和热标记系统中的显色剂,通过将二苯胺与取代苯甲酰(或3-吲哚甲酰)吡啉羧酸和取代苯甲酰(或3-吲哚甲酰)吡嗪羧酸反应制备。