Pd(OAc)2-catalyzed fluoride-free cross-coupling reactions of arylsiloxanes with aryl bromides in aqueous medium |
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Authors: | Shi Shengyin Zhang Yuhong |
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Institution: | Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China. |
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Abstract: | Mild conditions have been developed to achieve the Pd(OAc)2-catalyzed fluoride-free cross-coupling between the aryl bromides and arylsiloxanes in good to high yields in aqueous medium. The success of the reactions requires the presence of poly(ethylene glycol) (PEG) and 3 equiv of sodium hydroxide. The product was easily separated with ethyl ether extraction, and the catalytic system can be reused eight times with high efficiency. |
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