Dimroth-Umlagerung von Iminen des 1,5-Diaminotetrazols

Dimroth Rearrangement of Imines Derived from 1,5-Diaminotetrazole Heating the imines 1 in dimethyl sulfoxide (or partly in xylene) provides hydrazones such as 2. The reaction is greatly favoured by electron-withdrawing groups attached to the imine carbon atom.