Novel CuO Nanoparticle Catalyzed C−N Cross Coupling of Amines with Iodobenzene

ArticleinOrganic Letters 9(17):3397-9 · September 2007with32 Reads
DOI: 10.1021/ol0713887 · Source: PubMed
CuO nanoparticles catalyze the C-N cross coupling of amines with iodobenzene in excellent yields. The reaction is simple and efficient and operates under air with ligand free conditions. The catalyst is recyclable without loss of activity.
    • "The use of CuO nanoparticle for cross-coupling reaction was first reported by Rout et al. [26]. CuO nanomaterials containing high surface area and reactive morphologies have been studied as effective catalysts for organic synthesis [27, 28]. CuO nanomaterials were of considerable interest due to role in catalysis, in metallurgy, and in hightemperature superconductors [29, 30]. "
    [Show abstract] [Hide abstract] ABSTRACT: A simple and efficient method for N-arylation of 1,2,4-triazole at room temperature was described by the use of predominant (111) facet CuO nanoparticles as a catalyst in ligand-free condition. The catalyst was recyclable, and a variety of substrates give N-arylation product in high yield with short period of reaction time. The wide scope of this catalyst led us to investigate transformations involving less-reactive nitrogen nucleophiles, such as imidazole and pyrazoles. We were pleased to find that various derivatives of azoles were effectively coupled with aryl iodide to afford the desired N-arylated product in excellent yield.
    Full-text · Article · Sep 2012
    • "Nanostructured materials, especially nanometal oxides such as MgO, CuO, Al 2 O 3 , CaO, BaO, SrO, ZnO, and TiO 2 , exhibit great promise and opportunities for a new generation of materials with improved and tailorable properties for applications in sensor development, optoelectronics, separation, and catalysis studies [5]. Among these nanometal oxides, CuO has gained advantages because of its higher catalytic activity in many oxidation processes [6]. "
    [Show abstract] [Hide abstract] ABSTRACT: Zeolite encapsulated nanocrystalline CuO is synthesized and characterized by powder XRD and HRTEM analyses which clearly show that the particles are less than 15 nm and the nanoparticles are highly dispersed. This nano CuO encapsulated CuY zeolite is used as catalyst in the oxidation of aromatic secondary alcohols. CuY zeolite acts as an efficient support for nano CuO, by stabilizing it and preventing its aggregation. Plausible mechanisms for the formation of the various products are also given.
    Full-text · Article · Jan 2008
  • [Show abstract] [Hide abstract] ABSTRACT: CuO shuttle-like and flower-like nanocrystals were synthesized through a one-step, low-temperature solution-phase method in the presence of a cation surfactant, hexadecyl trimethyl ammonium bromide. These nanocrystals were studied as an additive for promoting the thermal decomposition of ammonium perchlorate (AP). With the addition of CuO shuttle-like and flower-like nanocrystals, the thermal decomposition temperature of AP decreased. The structure, particle size, and morphology of resulting CuO powders were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Thermogravimetric analysis technique was applied to investigate the thermal decomposition of mixtures of AP and as-prepared CuO nanocrystals.
    Article · Jul 2009
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