ChemInform Abstract: First Synthesis of 5, 8‐Dichloro‐3‐(2‐pyridyl)benzo[e][1, 2, 4]triazines by Reaction of 3, 3, 6, 6‐Tetrachloro‐1, 2‐cyclohexanedione with 2‐Pyridylamidrazones. Characterization of Unexpected Bishemiaminal Intermediates. Issue 26 (6th June 2013)