Journal
TETRAHEDRON
Volume 67, Issue 1, Pages 250-256Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.10.062
Keywords
Heck reaction; Wool-Pd complex; Aqueous media; Heterogeneous catalyst
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Funding
- National Natural Science Foundation of China [20674063, 20774074]
- Specialized Research Fund for the Doctoral Program of Higher Education [20050736001]
- Key Laboratory of Eco-Environment-Related Polymer Materials (Northwest Normal University), Ministry of Education
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Heterogeneous palladium catalysts, a biopolymer complex wool-Pd, have been applied in water-mediated coupling reactions of aryl bromides without assistance of any phosphine ligands. The catalyst was characterized by XPS, ICP. The results showed that aryl bromides could carry out the coupling reaction with a variety of alkenes at 80 degrees C, in aqueous media under atmospheric condition. More importantly, the cheap catalyst is stable, which shows negligible metal leaching, and retain good activity for at least ten successive runs without any additional activation treatment. This approach would be very useful from a practical viewpoint. (C) 2010 Elsevier Ltd. All rights reserved.
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