Transfer Hydrogenation of Azoarenes to Hydrazoarenes by Ammonia Borane Complex Catalyzed by Au Nanoparticles
作者:Elisavet‐Maria Zantioti‐Chatzouda、Dimitra Malliotaki、Manolis Stratakis
DOI:10.1002/adsc.202300387
日期:2023.9.5
Minute amounts of supported Au nanoparticles on TiO2 (0.1 mol%) catalyze quantitatively at room temperature the transfer hydrogenation of azoarenes to hydrazoarenes by ammonia borane complex, in ethanol as solvent. At 1 mol% catalyst loading level and 2.5 molar equivalents of ammonia borane the process occurs instantaneously. The catalyst is recyclable and reusable. In the absence of reducing agent,
TiO 2上的微量负载Au纳米颗粒(0.1 mol%)在室温下定量催化在乙醇作为溶剂中通过氨硼烷络合物将偶氮芳烃转移氢化为腙芳烃。在 1 mol% 催化剂负载水平和 2.5 摩尔当量氨硼烷下,该过程立即发生。该催化剂可回收、可重复使用。在没有还原剂的情况下,亚氮芳烃经历顺利的Au/TiO 2催化的有氧氧化回到偶氮芳烃。