Unprecedented Copper(II) Complex with a Topoquinone-like Moiety as a Structural and Functional Mimic for Copper Amine Oxidase: Role of Copper(II) in the Genesis and Amine Oxidase Activity
Copper amineoxidase (CAO), consisting of the topoquinone (TPQ) cofactor, catalyzes the oxidation of primary amines to aldehyde. We have successfully addressed this issue through isolation of a copper complex which mimics the active-site structure as well as the function of CAO. This inimitable complex, consisting of two TPQ-like side-arms, formed by ambient aerial oxidation of a precursor Schiff base
Aerobicoxidation reaction of amines to imines catalyzed by polymer-incarcerated Au nanoclusters (PI-Au) was developed. The effect of cluster size for this oxidation reaction was carefully examined...
开发了由聚合物包埋的 Au 纳米团簇 (PI-Au) 催化的胺到亚胺的有氧氧化反应。仔细检查了簇大小对这种氧化反应的影响......
Selective Oxidation of Amines to Aldehydes or Imines using Laccase-Mediated Bio-Oxidation
chemo‐enzymatic aerobic oxidation in water of benzylamines to obtain aldehydes or imines is described. Laccasefrom Trametes versicolor was chosen as biocatalyst, and TEMPO (radical 2,2,6,6‐tetramethylpiperidine 1‐oxyl) as mediator. A study on the pH dependence of the aqueousmedium allowed us to realise a fine tuning on product selectivity. Under our optimized reaction conditions, the bio‐oxidation
By catalyst and condition screening, a simple Cu(I)/TEMPO-catalyst system was found to be an active and highly effective catalyst for the aerobic oxidation of amines to imines in open air at room temperature under neat conditions. This new method provided a mild, efficient, and practical alternative for the synthesis of the useful imines directly from primary and secondary amines.
Aerobic Oxidative Coupling of Amines by Carbon Nitride Photocatalysis with Visible Light
作者:Fangzheng Su、Smitha C. Mathew、Lennart Möhlmann、Markus Antonietti、Xinchen Wang、Siegfried Blechert
DOI:10.1002/anie.201004365
日期:2011.1.17
Coupling on sunshine: A simple and efficient synthesis of benzoxazoles, benzimidazoles, and benzothiazoles is realized through a one‐pot preparation driven by a photocatalyticcascade reaction. Carbon nitride and visiblelight are employed to achieve this metal‐free aerobic oxidation of amines to imines (see scheme; mpg‐C3N4=mesoporous graphite carbon nitride).
阳光下的耦合:通过光催化级联反应驱动的一锅法制备,可实现苯并恶唑,苯并咪唑和苯并噻唑的简单有效合成。氮化碳和可见光可用于实现胺向亚胺的无金属需氧氧化(请参阅方案; mpg-C 3 N 4 =中等石墨氮化碳)。