1, 4-Dimethyl-1, 4-dihydro-l, 2, 4, 5-tetrazine (1) has been prepared by a convenient two- step route and shown to rearrange to a triazoline (11) in base. Attempts to differentiate between the several possible planar and boat conformations for the &-available electron system (1) by nmr failed, but data pertinent to this problem were obtained from studies of the mechanism of the process, 1-P 11, and of the alkylation of 1, which occurs at nitrogen ...
