ball mill for copper in banjul

ball mill for copper in banjul

Abstract. A solvent-free method for the Sonogashira coupling reaction was established under ball milling conditions without the use of copper or additional ligands. Pd (OAc) 2 or Pd (PPh 3) 4 in combination with 1,4-diazabicyclo [2.2.2]octane ( DABCO) were chosen as catalysts and base, respectively. The reaction was investigated using a variety of aryl halides and acetylenes and with different amounts of …

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