Recyclable and eco-friendly Pd-complexed graphene oxide/N-heterocyclic carbene catalyst for various coupling reactions in aqueous phase
- Authors
- Kim, Seongsoo; Cho, Hong-Jun; Shin, Dong-Sik; Lee, Sang-Myung
- Issue Date
- Jun-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Heterogeneous catalyst; Graphene oxide; N-Heterocyclic carbene; Palladium; C-C cross coupling
- Citation
- TETRAHEDRON LETTERS, v.58, no.25, pp 2421 - 2425
- Pages
- 5
- Journal Title
- TETRAHEDRON LETTERS
- Volume
- 58
- Number
- 25
- Start Page
- 2421
- End Page
- 2425
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/8296
- DOI
- 10.1016/j.tetlet.2017.05.017
- ISSN
- 0040-4039
- Abstract
- In this study, we report recyclable Pd-complexed graphene oxide (GO) catalysts with a bulky N-heterocyclic carbene (NHC) ligand (GO/NHC-Pd) for various cross-coupling reactions in the aqueous phase. To prepare GO/NHC-Pd, the NHC precursor and a trimethoxy-silane linker were combined on the GO surface via condensation, followed by the Pd chelation over GO/NHC. The GO-based catalysts were applied to three types of C-C cross-coupling reactions including Suzuki, Heck and Sonogashira reactions in the aqueous phase, to evaluate their catalytic performance. The reusability of the catalysts was tested by performing five consequent cross-coupling reactions. (C) 2017 Elsevier Ltd. All rights reserved.
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