Synthesis 2003(2): 0217-0222
DOI: 10.1055/s-2003-36821
PAPER
© Georg Thieme Verlag Stuttgart · New York

Solventless Suzuki Coupling Reactions On Palladium-Doped Potassium Fluoride­ Alumina

George W. Kabalka*, Lei Wang, Richard M. Pagni, C. Maxwell Hair, Vasudevan Namboodiri
Departments of Chemistry and Radiology, The University of Tennessee, Knoxville, TN 37996-1600, USA
Fax: +1(865)9742997; e-Mail: kabalka@utk.edu;
Further Information

Publication History

Received 23 January 2002
Publication Date:
22 January 2003 (online)

Abstract

A solventless Suzuki coupling reaction has been developed which utilizes a commercially available potassium fluoride alumina mixture and palladium powder. The new reaction is convenient, environmentally friendly, and generates good yields of the coupled products. Aryl iodides react faster than the bromides or chlorides; aryl groups are also more reactive than alkenyl groups, which react faster than alkyl groups. The use of microwave irradiation accelerates the reaction, decreasing reaction times from hours to minutes. The palladium powder catalyst can be recycled using a simple filtration and washing sequence without loss of catalytic activity.