Green synthesis of carbon quantum dots from vanillin for modification of magnetite nanoparticles and formation of palladium nanoparticles: Efficient catalyst for Suzuki reaction

TETRAHEDRON

卷:73

Article

Gholinejad, Mohammad¹  Najera, Carmen^2,3  Hamed, Fatemeh¹  Seyedhamzeh, Mohammad¹  Bahrami, Maede¹  Kompany-Zareh, Mohsen¹ 

[1] Inst Adv Studies Basic Sci, Dept Chem, Gava Zang 4513766731, Zanjan, Iran

[2] Univ Alicante, Dept Quim Organ, Apdo 99, E-03080 Alicante, Spain

[3] Univ Alicante, Ctr Innovat Quim Avanzada ORFEO CINQA, Apdo 99, E-03080 Alicante, Spain

关键词: Vanillin;    Magnetite;    Palladium;    Quantum dots;    Suzuki;   

DOI  :  10.1016/j.tet.2016.11.014

来源: Elsevier

【 摘 要 】

In this report we prepared carbon quantum dots (CQD) from vanillin as an ecofriendly and naturally abundant compound for modification of magnetic nanoparticles (CQD@Fe3O4 NPs). This new magnetic solid has been used for complete reduction of PdCl2 with formation of stabilized palladium nanoparticles (Pd@CQD@Fe3O4 NPs) and characterized by SEM, TEM, EDX, solid UV, VSM, XPS, XRD, and N-2 adsorption -desorption analyses. These magnetic supported Pd NPs have been used as an efficient catalyst for the Suzuki-Miyaura cross-coupling reactions of aryl bromides at room temperature in aqueous ethanol and of aryl chlorides at 120 degrees C in PEG200 under low catalyst loading in air. The heterogeneous catalyst can be easily recovered by an external magnet and reused for eight consecutive runs. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free