<scp>
Fe
<sub>2</sub>
Mn
</scp>
(
<scp>
<i>μ</i>
<sub>3</sub>
‐O
</scp>
)(
<scp>COO</scp>
)
<sub>6</sub>
Cluster Based Stable
<scp>MOF</scp>
for Oxidative Coupling of Amines via Heterometallic Synergy
作者:Ying‐Xia Wang、Hui‐Min Wang、Pan Meng、Dong‐Xia Song、Zhikai Qi、Xian‐Ming Zhang
DOI:10.1002/cjoc.202100361
日期:2021.11
The direct catalytic oxidative coupling of amines is one of the attracting methods for the synthesis of a variety of pharmaceutical or industrial needed imines. Numerous earth-abundant manganese based salts, oxides, and complexes have been applied in this reaction. However, these compounds suffered from difficult separation, large catalyst loading, complicated reactivation or indeterminate activity
胺的直接催化氧化偶联是合成各种医药或工业所需亚胺的吸引方法之一。许多地球上含量丰富的锰基盐、氧化物和络合物已用于该反应。然而,这些化合物存在分离困难、催化剂负载量大、再活化复杂或活性不确定等问题。考虑到具有晶体结构、精确组成和巨大表面积的金属有机骨架 (MOF) 在多相催化反应中具有优越的性能,在此,我们将 Mn 引入 [Fe 3 ( μ 3 -O)(CH 3 COO) 6 ],制备稳定 MOF 的前体之一,并得到 [Fe2 Mn( μ 3 -O)(CH 3 COO) 6 ]簇。用联苯-3,4',5-三羧酸 (BPTC) 替换配体后,基于异金属簇的 [Fe 2 Mn( μ 3 -O)(BPTC) 2 (DMF) 2 (H 2O)] (1) 得到。正如预期的那样,1 是稳定的,并且能够在室温下以 0.9 mol% 的催化剂负载量有效和选择性地催化胺的均偶联或交叉偶联。对照实验表明,1 的催化活性主要来自