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Exceptionally high turnover frequencies recorded for a new chitosan-based palladium(II) catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
38747 45790 2016 9 PDF Available
Title
Exceptionally high turnover frequencies recorded for a new chitosan-based palladium(II) catalyst
Abstract

•A new cross-linked chitosan was obtained using 2,2′-pyridil as a cross-linking agent.•2,2′-Pyridil cross-linked chitosan was used as support for palladium catalyst.•The catalyst yielded excellent TONs of up to 20,000 and TOFs of up to 240,964.

To be industrially feasible, and applicable in synthesis of fine chemicals, a catalyst has to possess high turnover number (TON) and turnover frequency (TOF). In this study, a new cross-linked chitosan derivative was synthesized by using 2,2′-pyridil as a cross-linking agent. 2,2′-Pyridil cross-linked chitosan was used to as a support material for palladium catalyst. Chitosan-pyridil-based Pd(II) catalyst was tested in the microwave-assisted synthesis of biaryls via Suzuki coupling reactions. The catalyst yielded remarkable TONs of up to 20,000 and TOFs of up to 240,964 by using very low catalyst loading (5 × 10−3% mol) in a short reaction time (5 min). The catalyst also showed a better recyclability.

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Keywords
Suzuki coupling; Pyridil; Cross-linking; TON; TOF
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Exceptionally high turnover frequencies recorded for a new chitosan-based palladium(II) catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 523, 5 August 2016, Pages 12–20
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us