Reliable and Diverse Synthesis of Aryl Azides through Copper‐Catalyzed Coupling of Boronic Acids or Esters with TMSN3

Aryl azide formation: The copper-catalyzed coupling reaction of boronic esters and acids with TMSN3 have been presented as a highly efficient, simple, broadly applicable, and less hazardous methodology for the practical synthesis of aryl azides with structural diversity (see scheme).