Heterogeneously Porous γ-MnO<sub>2</sub>-Catalyzed Direct Oxidative Amination of Benzoxazole through CH Activation in the Presence of O<sub>2</sub>
作者:Provas Pal、Arnab Kanti Giri、Harshvardhan Singh、Subhash Chandra Ghosh、Asit Baran Panda
DOI:10.1002/asia.201402057
日期:2014.9
Oxidative amination of azoles through catalytic CH bond activation is a very important reaction due to the presence of 2‐aminoazoles in several biologically active compounds. However, most of the reported methods are performed under homogeneous reaction conditions using excess reagents and additives. Herein, we report the heterogeneous, porous γ‐MnO2‐catalyzed direct amination of benzoxazole with
通过催化Ç唑类的氧化胺化 H键活化是在几个生物活性化合物由于2- aminoazoles存在一个非常重要的反应。然而,大多数报道的方法是在均相反应条件下使用过量的试剂和添加剂进行的。在这里,我们报告的异类,多孔γ-的MnO 2苯并恶唑与各种伯胺和仲胺的催化直接胺化。胺化反应在温和的反应条件下进行,使用分子氧作为绿色氧化剂,无任何添加剂。催化剂可以很容易地通过过滤分离并重复使用几次,而不会显着降低其催化性能。值得注意的是,该反应可耐受诸如醇的官能团,因此表明该反应的广泛适用性。