作者:Álisson Silva Granato、Gustavo S. Gonçalves de Carvalho、Carla G. Fonseca、Javier Adrio、Alexandre A. Leitão、Giovanni Wilson Amarante
DOI:10.1016/j.cattod.2020.08.011
日期:2021.12
synthesized and applied towards oxidation reactions of benzylamine derivatives. Under the optimized reaction conditions, the selectivity to oxime enhanced, leading to the main product with up to 72 %. Moreover, even α-substituted benzylamines were well tolerated and led to oximes in good isolated yields. It is important to mention; four equivalents of the harmless and inexpensive hydrogen peroxide were employed
合成了一系列负载混合氧化物的铌基催化剂并应用于苄胺衍生物的氧化反应。在优化的反应条件下,对肟的选择性提高,主产物可达72%。此外,即使是α-取代的苄胺也具有良好的耐受性,并以良好的分离产率产生肟。值得一提的是;使用四当量的无害且廉价的过氧化氢作为氧化剂。机制假设表明,反应进行选择性苄胺氧化成亚硝基中间体,随后形成相应的肟互变异构体,由 NbO x产生的不稳定水介导负载型催化剂。这包括第一个混合氧化物负载的铌基催化剂,用于将苄胺选择性氧化为肟。