An electrocatalytic method has been developed to oxidize primary alcohols and aldehydes to the corresponding carboxylic acids using 4-acetamido-2,2,6,6-tetramethylpiperidin-1-oxyl (ACT) as a mediator. The method successfully converts benzylic, aliphatic, heterocyclic, and other heteroatom-containing substrates to the corresponding carboxylic acids in aqueous solution at room temperature. The mild conditions enable retention of stereochemistry adjacent to the site of oxidation, as demonstrated in a 40 g-scale synthesis of a precursor to levetiracetam, a medication used to treat epilepsy.

中文翻译：

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4-乙酰胺基-TEMPO催化醇和醛电化学氧化成羧酸：“ Anelli”和“ Pinnick”氧化的替代方法

已经开发出一种电催化方法，使用4-乙酰氨基-2,2,6,6-四甲基哌啶-1-氧基（ACT）作为介体，将伯醇和醛氧化为相应的羧酸。该方法在室温下将水溶液中的苄基，脂族，杂环和其他含杂原子的底物成功转化为相应的羧酸。温和的条件能够使立体化学保留在氧化位点附近，如左乙拉西坦（一种用于治疗癫痫的药物）的前体的40克规模合成所证明的。