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Copper-free Sonogashira cross-coupling reaction catalyzed by polymer-supported N-heterocyclic carbene palladium complex
- Authors
- Kim, Jong-Ho; Lee, Dong-Ho; Jun, Bong-Hyun; Lee, Yoon-Sik
- Issue Date
- Oct-2007
- Publisher
- Elsevier BV
- Keywords
- polymer-supported catalyst; N-heterocyclic carbene (NHC); heterogeneous catalysis; palladium (Pd); sonogashira reaction; copper-free.
- Citation
- Tetrahedron Letters, v.48, no.40, pp 7079 - 7084
- Pages
- 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- Tetrahedron Letters
- Volume
- 48
- Number
- 40
- Start Page
- 7079
- End Page
- 7084
- ISSN
- 0040-4039
- Abstract
- A core-shell type of polymer-supported N-heterocyclic carbene (NHC) palladium catalyst was applied to Sonogashira cross-coupling reactions without copper cocatalyst under ambient atmosphere. This supported NHC-palladium complex efficiently catalyzed the copper-free Sonogashira reaction of various aryl iodides and bromides with terminal alkynes; the reaction exhibited high dependency on the temperature and the amount of base as well as its nature. In addition, this heterogeneous catalyst exhibited good reusability for the copper-free Sonogashira reaction. (c) 2007 Elsevier Ltd. All rights reserved.
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Related Researcher
- Kim, Jong-Ho
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)