3-氰基苄胺 在
air 、 iron single atoms on nitrogen-doped carbon nanocatalyst 作用下,
以
水 为溶剂,
反应 10.0h,
以83%的产率得到3-(((3-cyanobenzyl)imino)methyl)benzonitrile
参考文献:
名称:
Fe 纳米团簇的共存促进 Fe 单原子产生单线态氧,用于伯胺到亚胺的有效好氧氧化
摘要:
通过同时存在金属纳米颗粒或纳米团簇(NCs)来调整单金属原子催化剂的几何和电子结构,为提高其催化性能提供了另一种途径。在此,我们证明了在 N 掺杂多孔碳上靠近 Fe 单原子的 Fe NCs 的共存可以显着提高使用空气作为氧化剂将伯胺有氧氧化为亚胺的催化性能。广谱的芳香族、杂环和脂肪族伯胺被高效且选择性地氧化成相应的亚胺,产率从好到高。实验测量和理论计算表明,Fe NCs的接近与Fe单原子相互作用,不仅有利于分子O 2的吸附和胺底物,而且还促进O 2的活化以选择性地产生单线态氧(1 O 2),然后通过具有较低能垒的H原子抽象促进关键中间体亚胺的形成,从而显着提高反应活性。
<i>trans</i>-Symmetric Dynamic Covalent Systems: Connected Transamination and Transimination Reactions
作者:Fredrik Schaufelberger、Lei Hu、Olof Ramström
DOI:10.1002/chem.201500520
日期:2015.6.26
transaminations as a new type of dynamiccovalent reaction is described. The key 1,3‐proton shift is under complete catalytic control and can be conducted orthogonally to, or simultaneous with, transimination in the presence of an amine to rapidly yield two‐dimensional dynamicsystems with a high degree of complexity evolution. The transamination–transimination systems are proven to be fully reversible
Hydrogenation of heteroaromatic nitriles and aromatic dinitriles by heterogeneous or homogeneous ruthenium catalysts derived from [Ru 3 (CO) 12 ]
作者:Juventino J. García、Nora Pérez-Lezama、Alma Arévalo
DOI:10.1016/j.ica.2017.04.051
日期:2017.8
The use of the complex [Ru-3(CO)(12)] (1) as a catalyst precursor (0.1 mol%) at 200 degrees C, 60 psi of H-2, along with triphenylphosphine (TPP) generated ruthenium nanoparticles (Ru-Nps); this occurred in the presence of pyridine-nitriles leading to a variety of hydrogenation (secondary amine, imine, or imidazole) products, depending of the pyridine-nitrile used, under similar reaction conditions. This relates to relatively good to modest yields, determined by the substituents in the corresponding pyridine. In sharp contrast, the use of aromatic dinitriles did not generate Ru-Nps at 140 degrees C, 150 psi of H-2 and TPP, but allowed the homogeneous catalytic hydrogenation of the 1,4- and 1,3-dicyanobenzenes, to yield the corresponding CN-substituted secondary amine or imine. The main products were characterized by different analytical methods and spectroscopic techniques. (C) 2017 Elsevier B.V. All rights reserved.
Coexistence of Fe Nanoclusters Boosting Fe Single Atoms to Generate Singlet Oxygen for Efficient Aerobic Oxidation of Primary Amines to Imines
作者:Zhiming Ma、Shiqiang Liu、Nanfang Tang、Tao Song、Ken Motokura、Zhemin Shen、Yong Yang
DOI:10.1021/acscatal.1c04467
日期:2022.5.6
coexistence of Fe NCs in proximity to Fe single atoms on N-doped porous carbon can significantly improve the catalytic performance in aerobic oxidation of primaryamines to imines using air as the oxidant. A broad spectrum of primary aromatic, heterocyclic, and aliphatic amines was efficiently and selectively oxidized into their corresponding imines in good to high yields. Experimental measurements and theoretical
通过同时存在金属纳米颗粒或纳米团簇(NCs)来调整单金属原子催化剂的几何和电子结构,为提高其催化性能提供了另一种途径。在此,我们证明了在 N 掺杂多孔碳上靠近 Fe 单原子的 Fe NCs 的共存可以显着提高使用空气作为氧化剂将伯胺有氧氧化为亚胺的催化性能。广谱的芳香族、杂环和脂肪族伯胺被高效且选择性地氧化成相应的亚胺,产率从好到高。实验测量和理论计算表明,Fe NCs的接近与Fe单原子相互作用,不仅有利于分子O 2的吸附和胺底物,而且还促进O 2的活化以选择性地产生单线态氧(1 O 2),然后通过具有较低能垒的H原子抽象促进关键中间体亚胺的形成,从而显着提高反应活性。