solvents and normal heating conditions with simple work-up procedures.

Keywords: [1,2,3]triazolo[4,5-d][1,2,4]triazolo[4,3-a]pyrimidine; heterocyclization; alkylation; diazotization.

References

[1] Beyer C. F., Zhang N., Hernandez R...

-chloro-3-alkyl-7-methyl-3H-

[1,2,3]triazolo[4,5-d]pyrimidine (2a-e). Further reaction of compounds (2a-e) with NaN3 in

EtOH was resulted in various derivatives of novel heterocyclic system of tetrazolo[1,5-

a][1,2,3]triazolo[4,5-d...

Several 3H-[1,2,3]triazolo[4,5-d][1,2,4]triazolo[4,3-a]pyrimidine derivatives of a novel ring system have been synthesised. The initial substitution of the 4-Cl function of 2,4-dichloro-6-methylpyrimidin-5-amine with benzylamine followed...