Metal‐Catalyzed One‐Pot Synthesis of Tetrazines Directly from Aliphatic Nitriles and Hydrazine

Paving the way: The lack of convenient synthetic methods is a significant roadblock to the broader use of 1,2,4,5-tetrazines in bioorthogonal chemistry and functional materials. Lewis acid metal catalysts—most notably divalent nickel and zinc salts—are described to catalyze the one-pot synthesis of 1,2,4,5-tetrazines directly from aliphatic nitriles (see scheme). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.