Oxygenative Aromatic Ring Cleavage of 2-Aminophenol with Dioxygen Catalyzed by a Nonheme Iron Complex: Catalytic Functional Model of 2-Aminophenol Dioxygenases
作者:Sayanti Chatterjee、Tapan Kanti Paine
DOI:10.1021/ic502658p
日期:2015.2.16
isolated. The complex reacts with O2 to cleave the C–C bond of 4,6-di-tBu-AP regioselectively and catalytically to afford 4,6-di-tert-butyl-2-picolinic acid. An iron(II)-chloro complex [(tBu-LMe)FeIICl2(MeOH)] (1) of the same ligand also cleaves the aromatic ring of 4,6-di-tBu-AP catalytically in the reaction with O2. To assess the effect of urea group on the ring cleavage reaction of 2-aminophenol, two iron
2-氨基苯酚双加氧酶以O 2为氧化剂催化2-氨基苯酚氧化环裂解为2-吡啶甲酸。受这些非血红素铁酶催化的反应的启发,仿生铁(III)-2-酰胺基酚盐络合物[[(t Bu-L Me)Fe III(4,6- di - t Bu-AP)](ClO 4) (1a)的面部三齿配体(t Bu-L Me = 1- [双(6-甲基-吡啶-2-基)-甲基] -3-叔丁基脲和4,6-di- t Bu已经分离出带有脲基的-H 2 AP = 2-氨基-4,6-二叔丁基苯酚)。配合物与O反应2裂解4,6-二-的C-C键吨区域选择性卜-AP和催化,得到4,6-二-叔丁基-2-吡啶甲酸。相同配体的铁(II)-氯配合物[(t Bu-L Me)Fe II Cl 2(MeOH)](1)也催化裂解4,6-di- t Bu-AP的芳环。与O 2反应。为了评估脲基对2-氨基苯酚,两个铁配合物[(BA-L Me)2 Fe II 2 Cl