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Synthesis 2005(4): 537-542
DOI: 10.1055/s-2004-837298
DOI: 10.1055/s-2004-837298
PAPER
© Georg Thieme Verlag Stuttgart · New York
Efficient Protocol for the Phosphine-Free Suzuki-Miyaura Reaction Catalyzed by Palladium on Carbon at Room Temperature
Further Information
Received
20 October 2004
Publication Date:
11 January 2005 (online)
Publication History
Publication Date:
11 January 2005 (online)
Abstract
A mild and efficient protocol for the phosphine-free Suzuki-Miyaura coupling reaction of aryl bromides with arylboronic acids has been developed which utilizes the commercially available 10% Pd/C (3.5 mol% Pd) in ethanol-water (1:1) and Na2CO3 at room temperature. The reaction is convenient, environmentally benign and generates excellent yields of the coupled products (94-100%). The catalyst can be recycled using simple filtration and washing sequences without significant decrease in the yield of coupling product up to the fourth run.
Key words
Suzuki-Miyaura coupling - palladium - catalysis - heterogeneous
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