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Keywords:

  • thiophene derivatives;
  • ring closure reactions;
  • multicomponent reactions;
  • luminescence, fluorescence (organic substances)

Abstract

The modified Sonogashira coupling of aroyl chlorides (I) with alkynes (II) followed by Fiesselmann cyclocondensation of resulting alkynones with mercaptoacetate (III) leads to trisubstituted thiophenes (IV).