General and efficient methodology for the Suzuki-Miyaura reaction in technical grade 2-propanol

The reaction. profile of a series of palladium-based catalysts was examined in the Suzuki-Miyaura reaction using technical grade 2-propanol as solvent and potassium t-butoxide as base. The results generally show high activity. The method allows for the coupling of electron-rich aryl chlorides with sterically hindered aryl boronic acids to produce tri-ortho-substituted biaryls in high yields using very mild conditions and short reaction times. (C) 2004 Elsevier B.V. All rights reserved.