Nitro resin supported copper nanoparticles: An effective heterogeneous catalyst for C N cross coupling and oxidative C C homocoupling
作者:Nirav Barot、Sunil B. Patel、Harjinder Kaur
DOI:10.1016/j.molcata.2016.06.009
日期:2016.11
investigate the synthesis and catalytic activity of copper nanoparticles (CuNPs) stabilized onto a novel nitro functionalized polystyrene resin. The deposited nanoparticles were characterized by various analytical techniques and TEM images, revealed uniformly distributed copper nanoparticles of sizes 3–9 nm. We effectively used the resin impregnated CuNPs for C N coupling of various aromatic amines with aryl
摘要 在本研究中,我们研究了稳定在新型硝基官能化聚苯乙烯树脂上的铜纳米粒子 (CuNPs) 的合成和催化活性。沉积的纳米粒子通过各种分析技术和 TEM 图像进行了表征,揭示了尺寸为 3-9 nm 的均匀分布的铜纳米粒子。我们有效地将树脂浸渍的 CuNPs 用于各种芳香胺与芳基卤化物的 CN 偶联以及苯乙炔的氧化 CC 同偶联。此外,还研究了催化剂的循环利用、金属离子的浸出和载体中的反应后变化,得出的结论是,在本质上具有氧化性的苯乙炔均偶联过程中,载体充当氧化剂。
Consecutive One-Pot Sonogashira-Glaser Coupling Sequence - Direct Preparation of Symmetrical Diynes by Sequential Pd/Cu Catalysis
作者:Eugen Merkul、Dominik Urselmann、Thomas J. J. Müller
DOI:10.1002/ejoc.201001472
日期:2011.1
Sonogashira coupling and the catalytic Glaser coupling are both catalyzed by the Pd-Cu complex couple and can be concatenated to a consecutivesequentiallyPd/Cu-catalyzed process in a one-pot fashion, and air oxygen serves as the only oxidant in the second step. In a pseudo-four-component synthesis, a broad variety of symmetrically substituted 1,4-bis(hetero)aryl-1,3-butadiynes are obtained in good