Synthesis of [2,2](2,6)pyridinophane-1,9-diene

Abstract
The synthesis of [2,2](2,6)pyridinophane-1,9-diene (2) is reported and, contrary to earlier predictions, (2) does not undergo spontaneous valence tautomerization to 15,16-dihydro-15,16-diazapyrene (3).

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