Reactions of 5,6,7,8-tetrafluoro-4-hydroxycoumarin derivatives with benzylamine and aniline
作者:K. V. Shcherbakov、Ya. V. Burgart、V. I. Saloutin
DOI:10.1007/s11172-006-0401-1
日期:2006.7
Abstract5,6,7,8-Tetrafluoro-4-hydroxycoumarin reacted with benzylamine under mild conditions to give a stable salt, while its refluxing with aniline or benzylamine in xylene afforded 5,6,7,8-tetrafluoro-4-phenyl(benzyl)aminocoumarins. Reactions of 3-acetyl(acetimidoyl)-5,6,7,8-tetrafluoro-4-hydroxycoumarins with benzylamine followed different pathways, depending on the solvent. Condensation at the
摘要 5,6,7,8-四氟-4-羟基香豆素在温和条件下与苄胺反应生成稳定的盐,在二甲苯中与苯胺或苄胺回流得到5,6,7,8-四氟-4-苯基(苄基)氨基香豆素。3-乙酰(乙酰亚氨基)-5,6,7,8-四氟-4-羟基香豆素与苄胺的反应遵循不同的途径,具体取决于溶剂。酰基取代基上的缩合可伴随着 7 位 F 原子的取代。3-乙酰香豆素形成盐,而 3-乙酰亚氨基香豆素生成 7-单取代产物。3-Acetyl(acetimidoyl)-5,6,7,8-四氟-4-羟基香豆素与苯胺反应,仅得到 5,6,7,8-四氟-4-羟基-3-(N-苯基乙酰亚氨基)香豆素。