5,6,7,8-Tetrafluoro-4-hydroxycoumarin derivatives in reactions with o-phenylenediamine
作者:Ya. V. Burgart、K. V. Shcherbakov、V. I. Saloutin、O. N. Chupakhin
DOI:10.1023/b:rucb.0000042279.90135.73
日期:2004.6
The reactions of 5,6,7,8-tetrafluoro-4-hydroxycoumarin derivatives with o-phenylenediamine occur with pyrone heterocycle cleavage and formation of substituted benzodiazepin-2-ones. 5,6,7,8-Tetrafluoro-4-hydroxycoumarin affords 4-(3,4,5,6-tetrafluoro-2-hydroxyphenyl)-2,3-dihydro-1H-1,5-benzodiazepin-2-one, 3-acetimidoyl-5,6,7,8-tetrafluoro-4-hydroxycoumarin produces 3-(3,4,5,6-tetrafluoro-2-hydroxybenzoyl)-4-methyl-1
5,6,7,8-四氟-4-羟基香豆素衍生物与邻苯二胺的反应发生吡喃酮杂环裂解并形成取代的苯二氮卓-2-酮。5,6,7,8-四氟-4-羟基香豆素得到4-(3,4,5,6-四氟-2-羟基苯基)-2,3-二氢-1H-1,5-苯并二氮杂-2-酮, 3-acetimidoyl-5,6,7,8-tetrafluoro-4-hydroxycoumarin 产生 3-(3,4,5,6-tetrafluoro-2-hydroxybenzoyl)-4-methyl-1,2-dihydro-1H-1, 5-benzodiazepin-2-one 和 3-acetyl-5,6,7,8-tetrafluoro-4-hydroxycoumarin 产生这两种杂环。