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Indexed by:期刊论文

Date of Publication:2013-07-01

Journal:EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Included Journals:SCIE、Scopus

Volume:2013

Issue:20

Page Number:4345-4350

ISSN No.:1434-193X

Key Words:Cross-coupling; Heterogeneous catalysis; Palladium; Biaryls; Liquid crystals

Abstract:<title content-type="main">Abstract
   An aerobic, ligand-free Suzuki reaction catalyzed by Pd/C in aqueous media has been developed. This method is a very simple, efficient and mild protocol for the cross-coupling of aryl bromides with arylboronic acids, and the reactions proceeded smoothly in excellent yields within short reaction times. Control experiments demonstrated that the Pd/C-catalyzed Suzuki reaction was much quicker when performed in air or oxygen than in nitrogen. Furthermore, this protocol could be used for the synthesis of fluorinated liquid-crystalline compounds. The Pd/C catalyst could be recovered and recycled efficiently at least ten times without significant loss of catalytic activity.