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Keywords:

  • aromaticity;
  • azaborines;
  • boron;
  • nitrogen;
  • heterocycles
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Ouroboros, from the Greek oura meaning tail and boros meaning eating, is a symbol imbued with great meaning across various diciplines and cultures. For example, the vision of a snake devouring its tail led Kekulé to the structure of the quintessential arene benzene almost 150 years ago. In their Review on page 6074 ff., S.-Y. Liu and co-workers summarize recent progress in the development of boron–nitrogen-containing heteroarenes. Cover illustration: Patrick Blower.