General examples of the palladium-catalyzed Suzuki–Miyaura cross-coupling of aryl or heteroaryl chlorides with potassium aryl- or heteroaryltrifluoroborates in water are presented. The palladium complex comprising of palladium(II) acetate and ‘CPCy Phendole-phos’ is found to be a highly effective catalyst system for this coupling reaction with low catalyst loading (down to 0.005 mol% Pd).
Key words
palladium - Suzuki–Miyaura reaction - aryl chloride - potassium aryltrifluoroborates - water - arylation