Hydrocarbon Oxidation by Bis-μ-oxo Manganese Dimers: Electron Transfer, Hydride Transfer, and Hydrogen Atom Transfer Mechanisms
作者:Anna S. Larsen、Kun Wang、Mark A. Lockwood、Gordon L. Rice、Tae-Jin Won、Scott Lovell、Martin Sadílek、František Tureček、James M. Mayer
DOI:10.1021/ja020204a
日期:2002.8.1
Described here are oxidations of alkylaromatic compounds by dimanganese mu-oxo and mu-hydroxo dimers [(phen)(2)Mn(IV)(mu-O)(2)Mn(IV)(phen)(2)](4+) ([Mn(2)(O)(2)](4+)), [(phen)(2)Mn(IV)(mu-O)(2)Mn(III)(phen)(2)](3+) ([Mn(2)(O)(2)](3+)), and [(phen)(2)Mn(III)(mu-O)(mu-OH)Mn(III)(phen)(2)](3+) ([Mn(2)(O)(OH)](3+)). Dihydroanthracene, xanthene, and fluorene are oxidized by [Mn(2)(O)(2)](3+) to give anthracene
这里描述的是二锰 mu-oxo 和 mu-羟基二聚体 [(phen)(2)Mn(IV)(mu-O)(2)Mn(IV)(phen)(2)](4+ ) ([Mn(2)(O)(2)](4+)), [(phen)(2)Mn(IV)(mu-O)(2)Mn(III)(phen)(2)] (3+) ([Mn(2)(O)(2)](3+)) 和 [(phen)(2)Mn(III)(mu-O)(mu-OH)Mn(III)( phen)(2)](3+) ([Mn(2)(O)(OH)](3+))。二氢蒽、呫吨和芴被 [Mn(2)(O)(2)](3+) 氧化,分别生成蒽、联芴基和联芴基。锰产品是双(氢氧化物)二聚体,[(phen)(2)Mn(III)(mu-OH)(2)Mn(II)(phen)(2)](3+) ([Mn(2) )(OH)(2)](3+))。UV/vis 光谱动力学数据的全局分析显示连续反应与 [Mn(2)(O)(OH)](3+)