4-Amino-1,2,3-triazoles pyrolysis

Reaction of the dicyanoindenone 231 with pyrazole or 1,2,3-triazole diazonium salts gives deeply colored amino-triazines 232 and 233, which cyclize upon pyrolysis to give the pentacyclic compounds 234 and 235 containing the pyrido[2,3-f]-l,2,4-triazine nucleus (Scheme 36) <2003JRM1161>. 

Gas-phase pyrolysis of 4-amino-3-allylthio-l. 2,4-tna oles provided a new route to [13]thiazolo[3,2-f)][l,2,4]triazoles <01JCS(P1)424>. The kinetics of the thermal rearrangement of 4-ethyl-3,5-diphenyl-4//-l,2,4-triazolcs have been investigated <01JHC955>. The counteranion-dependent symmetry of Cu(lI)-4-amino-l,2,4-triazole polymeric chains was investigated <01CC1254>. 

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