TY - JOUR AU - Qian, Yingjie; So, Jaeil; Jung, Sang-Yung; Hwang, Sosan; Jin, Myung-Jong; Shim, Sang Eun TI - A Graphene Oxide Nanosheet Supported NHC–Palladium Complex as a Highly Efficient and Recyclable Suzuki Coupling Catalyst SN - 0039-7881 SN - 1437-210X PY - 2019 JO - Synthesis JF - Synthesis LA - EN VL - 51 IS - 11 SP - 2287 EP - 2292 ET - 2019/03/20 DA - 2019/05/16 KW - graphene oxide KW - palladium KW - immobilization KW - heterogeneous catalysis KW - Suzuki coupling AB - A practical heterogeneous catalyst was prepared by anchoring a triazine-tethered N-heterocyclic carbene (NHC)–palladium complex on the surface of graphene oxide (GO) nanosheets. The immobilized complex was characterized by X-ray photoelectron spectroscopy, field-emission transmission electron microscopy, energy-dispersive X-ray spectroscopy, and surface area analysis. It proved to be a highly active and durable heterogeneous catalyst for Suzuki coupling reactions. At room temperature, the use of this catalyst enabled the preparation of various biaryls and heterobiaryls in short reaction times. The catalytic system could be recycled at least 10 times with almost consistent activity. The results reveal that the stable palladium complex is strongly anchored on the surface of GO nanosheets. Interestingly, an open planar network of the GO nanosheet support plays a role during the catalytic process in enhancing the catalytic activity. PB - © Georg Thieme Verlag DO - 10.1055/s-0037-1611726 UR - http://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0037-1611726 ER -