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Keywords:

  • carbon dioxide fixation;
  • heterocycles;
  • homogeneous catalysis;
  • reaction mechanism;
  • tungstate
Thumbnail image of graphical abstract

No pressure: A simple monomeric tungstate, [WO4]2−, serves as a highly efficient homogeneous catalyst for various transformations of CO2 at atmospheric pressure. The tungsten-oxo moiety activates CO2 and the substrate simultaneously. The catalyst system is high yielding and applicable to a wide range of substrates such as amines (see scheme), 2-aminobenzonitriles, and propargylic alcohols.