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Title: Functionalized Bis(triazolyl)phenylmethanol–palladium(II) Catalysts for Cross Coupling Reactions in Water
Authors: Supanan Ampawa
Chanin Kethong
Jiraya Kiriratnikom
Khamphee Phomphrai
Preeyanuch Sangtrirutnugul
Vidyasirimedhi Institute of Science and Technology
Mahidol University
Keywords: Chemistry
Issue Date: 30-Apr-2018
Citation: ChemistrySelect. Vol.3, No.16 (2018), 4156-4162
Abstract: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim PdII-bis(triazolyl)phenylmethanol complexes bearing different groups (i. e., H, OMe, OH, COOH) directly attached to the benzyl rings were explored as precatalysts for copper-free Sonogashira and Suzuki–Miyaura coupling reactions in water. Crystal structures reveal a bidentate N,N binding mode of the bis(triazolyl) ligands affording a distorted square planar PdII complexes. With the exception of the phenol-substituted bis(triazolyl) ligands, the other three Pd complexes exhibited high activities toward Suzuki–Miyaura coupling reactions. Transmission electron microscopy (TEM) study and PPh3 poisoning experiments confirm that bis(triazoly)-stabilized Pd nanoparticles (Pd NPs) were generated in situ during the catalytic reactions and involved as one of the active catalytic species in the Suzuki–Miyaura cross coupling.
ISSN: 23656549
Appears in Collections:Scopus 2018

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