by oxidation of fossil feedstocks. Selective hydrodeoxygenation of lignin derivatives has great potential for producing these chemicals but is challenging to obtain high yields. Here, we report that CeO2-supported Ru single-atom catalysts (SACs) enabled the hydrogenation of the benzene ring and catalyzedetheric C–O(R) bond cleavage without changing the C–O(H) bond, which could afford 99.9% yields of
环己醇是一种用途广泛的化学品,主要通过化石原料的氧化生产。木质素衍生物的选择性加氢脱氧具有生产这些化学品的巨大潜力,但要获得高产率具有挑战性。在这里,我们报告 CeO 2- 负载的 Ru 单原子催化剂 (SAC) 能够在不改变 C-O(H) 键的情况下实现苯环的氢化和催化醚 C-O(R) 键的断裂,这可以提供 99.9% 的环己醇收率。据我们所知,这是首次报道SAC催化芳环氢化。通过控制实验和密度泛函理论计算研究了反应机理。在催化剂中,形成了 Ru-O-Ce 位点,一个 Ru 原子与大约四个 O 原子配位。这些催化位点可以有效地实现加氢和脱氧反应,从而生成所需的环己醇。这项工作开创了单原子催化芳烃转化的先河,为环己醇的合成提供了一条新途径。
Synthesis of Cyclopentanohydronaphthalenes and Hydrophenanthrenes with Substituents in an Angular Position
作者:Homer. Adkins、Glenn F. Hager
DOI:10.1021/ja01177a005
日期:1949.9
73. Experiments on the synthesis of substances related to the sterols. Part XXX