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copper ball mill mill in Almaty

copper ball mill mill in Almaty

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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