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Keywords:

  • alkynes;
  • cross-coupling;
  • homogeneous catalysis;
  • Sonogashira coupling;
  • transition metals
Thumbnail image of graphical abstract

Commoners displacing the nobility? The scope of the Sonogashira coupling is widening with the discovery of new catalytic systems based on a variety of metals (see picture). In particular, cheap common metals are finding a place in transformations that were previously controlled by noble metals. The developments are examined, and the advantages and disadvantages of the various catalytic systems are discussed.