Electron loss to form radicals

The formation of a radical cation by electron loss, or a neutral radical by successive loss of e and H+ is probably an important pathway in many of the oxidative and other reactions of these dihydro compounds. In most cases, the radicals is merely a transient intermediate, but 1,4-dihydro- 

5-tetrazines are electrochemically oxidized to stable radical cations (498) or to neutral verdazyls (499). In turn, verdazyls are easily reduced to 1,2,3,4-tetrahydrotetrazines (500). 

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