Iron‐Catalyzed C(
<i>sp</i>
<sup>2</sup>
)−C(
<i>sp</i>
<sup>3</sup>
) Cross‐Coupling of Chlorobenzamides with Alkyl Grignard Reagents: Development of Catalyst System, Synthetic Scope, and Application
作者:Elwira Bisz、Michal Szostak
DOI:10.1002/adsc.201800849
日期:2019.1.11
preparation of alkylated amide‐derivatives by cross‐coupling chemistry using sustainable protocols is challenging due to sensitivity of the amide functional group to reaction conditions. Herein, we report the synthesis of alkyl‐substituted amides by iron‐catalyzed C(sp2)−C(sp3) cross‐coupling of Grignard reagents with aryl chlorides. The products of these reactions are broadly used in the synthesis of pharmaceuticals
CuO-Fe(III)-Zeolite-Y as efficient catalyst for oxidative alcohol-amine coupling reactions
作者:Gautam Gogoi、Manash J. Baruah、Subir Biswas、Nazimul Hoque、Seonghwan Lee、Young-Bin Park、Lakshi Saikia、Kusum K. Bania
DOI:10.1016/j.mcat.2022.112458
日期:2022.8
nanocatalyst with layered structure was supported over Fe-exchanged zeolite-Y (CuO-Fe(III)-Y) for selectivesynthesis of amides by oxidative coupling of aromatic primary alcohols and amines. The CuO-Fe(III)-Y catalyst was characterized by different physicochemical and spectroscopic techniques. The amide bond formation reaction was found to occur in absence of any external base and reagents. The temperature-programmed
具有层状结构的 CuO 纳米催化剂负载在 Fe 交换沸石-Y (CuO-Fe(III)-Y) 上,用于通过芳族伯醇和胺的氧化偶联选择性合成酰胺。通过不同的物理化学和光谱技术对 CuO-Fe(III)-Y 催化剂进行了表征。发现酰胺键形成反应在没有任何外部碱和试剂的情况下发生。程序升温脱附 (TPD) 研究预测了 CuO-Fe(III)-Y 催化剂中强碱性位点的发展,从而促进了脱氢偶联过程。发现该材料在这种偶联反应中的活性在不同反应条件下与其他昂贵的金属催化剂的活性相当。发现反应的产物产率与底物有关,产率中等至最大,为 85%。N通过C Cl键活化偶联产物。该反应的机制被认为是通过有助于激活苄基 C H 键的 Fe IV = O物质进行的。