Recyclable and reusable Pd(OAc)2/PPh3/PEG‐2000 system for homocoupling reaction of arylboronic acids under air without base |
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| Authors: | Jianhui Xia Mingzhu Cheng Qiurong Chen Mingzhong Cai |
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| Institution: | Key Laboratory of Functional Small Organic Molecules, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang, PR China |
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| Abstract: | A stable and efficient Pd(OAc)2/PPh3/PEG‐2000 catalytic system for homocoupling of arylboronic acids has been developed. In the presence of Pd(OAc)2 and PPh3, the homocoupling reaction of arylboronic acids was carried out smoothly in PEG‐2000 at 70 °C under air without base to afford a variety of symmetric biaryls in good to excellent yields. The isolation of the products was readily performed by extraction with diethyl ether, and the Pd(OAc)2/PPh3/PEG‐2000 system could be easily recycled and reused six times without significant loss of catalytic activity. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | palladium PEG‐2000 symmetric biaryl arylboronic acid green chemistry |
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