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Aerobic oxidation of C-H bonds to carboxylic acids enabled by decatungstate photocatalysis
Green Synthesis and Catalysis Pub Date : 2021-11-1 , DOI: 10.1016/j.gresc.2021.10.003
Jing Liu , Wei Zhao , Liangqiu Lu , Yiyin Liu , Ying Cheng , Wenjing Xiao

Direct aerobic oxidation of p-xylene using cobalt, manganese and bromide ion catalyst system, named the Amoco method, is a fundamentally important process to produce terephthalic acid in industry. However, it still suffers from harsh conditions and potential environmental pollution. Herein, we disclose an aerobic oxidation of alkyl aromatics to carboxylic acids through decatungstate photocatalysis featuring mild and green conditions (i.e., ambient temperature, visible light irradiation and atmospheric O2 as the green oxidant). It is scalable for the synthesis of terephthalic acid, which shows a significant potential for industrial production. Various substituted toluene derivatives were well applicable, thus furnishing acid and ester products in good yields.

中文翻译:

通过十钨酸盐光催化将CH键好氧氧化成羧酸

使用钴、锰和溴离子催化剂体系对二甲苯的直接好氧氧化,称为 Amoco 法,是工业生产对苯二甲酸的重要工艺。然而,它仍然面临着恶劣的条件和潜在的环境污染。在此,我们公开了通过具有温和和绿色条件(即环境温度、可见光照射和大气 O2 作为绿色氧化剂)的去钨酸盐光催化将烷基芳烃有氧氧化为羧酸。它可用于合成对苯二甲酸,显示出巨大的工业生产潜力。各种取代的甲苯衍生物都很好地适用,因此以良好的收率提供酸和酯产品。
更新日期:2022-01-13
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