An environmentally benign solvent system, Solkane365/227/ethanolblend, was developed for Suzuki–Miyauracross-couplingreactions of aryl boronic acids and aryl halides. The reaction is quite general and gives excellent yields for various aryl, heteroaryl, and fluoroaryl boronic acids or halides. Interestingly, this system also allows the synthesis of polyaryls.