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Synthesis 2008(20): 3267-3272
DOI: 10.1055/s-2008-1067274
DOI: 10.1055/s-2008-1067274
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Immobilization of NHC-Bearing Palladium Catalysts on Polyvinylpyridine; Applications in Suzuki-Miyaura and Hartwig-Buchwald Reactions under Batch and Continuous-Flow Conditions
Further Information
Received
3 June 2008
Publication Date:
25 September 2008 (online)
Publication History
Publication Date:
25 September 2008 (online)
Abstract
The facile coordinative immobilization of Organ’s PEPPSITM catalyst on a composite material composed of megaporous glass and polyvinylpyridine is described. The catalyst showed very good performance in Suzuki-Miyaura as well as Hartwig-Buchwald reactions of aryl chlorides under mild conditions and with low catalyst loadings. The modified PEPPSITM catalyst was probed both under batch mode and continuous-flow applications. The flow setup was also utilized to shed light on the stability of the PEPPSITM catalyst and the mobility of palladium.
Key words
microreactor - heterogeneous catalysis - Hartwig-Buchwald reaction - palladium - Suzuki-Miyaura reaction - immobilization
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