Indirect electrochemical side-chain oxidation of alkyl aromatic compounds - selective synthesis of methyl benzoates or ortho-benzoic acid trimethylesters
作者:Karl-Heinz Grosse Brinkhaus、Eberhard Steckhan、Dieter Degner
DOI:10.1016/s0040-4020(01)87454-8
日期:1986.1
The technically important side-chain oxidation of alkyl aromatic compounds to from either methyl benzoates or orthobenzoic acid trimethylesters can be performed electrochemically at low potentials in methanol solution using an undivided cell and tris(2,4-dibromopheny1)amine as redox catalyst. Under neutral or slightly acidic conditions methyl benzoates are selectively formed while under basic conditions
烷基芳族化合物从苯甲酸甲酯或原苯甲酸三甲酯到酯的技术上重要的侧链氧化反应可在甲醇溶液中以低电位通过电化学反应使用三元(2,4-二溴代苯胺)胺作为氧化还原催化剂在低电位下进行。在中性或弱酸性条件下,选择性地生成苯甲酸甲酯,而在碱性条件下,原酸酯占主导。以类似的方式从苯甲醛二甲基乙缩醛选择性地形成邻苯甲酸三甲酯。氧化还原催化剂在反应条件下是稳定的,因此可以进行数千个循环而没有明显的损失。