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Paper | Regular issue | Vol 29, No. 8, 1989, pp.1607-1613
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5056
Preparation of [1,2,4]Triazolo[5,1-c][1,2,4]triazine Derivatives from 3,4-Diamino[1,2,4]triazine

Pedro Molina,* Mateo Alajarín, Ma Jesús Pérez de Vega, and Antonio López

*Departmento de Química Orgánica, Facultad de Ciencias, Universidad de Murcia, 30071 Murcia, Spain

Abstract

3,4-Diamino[1,2,4]triazine 1 reacts with diarylcarbodiimides to give the 7-arylamino-3-methyl-8H-4-oxo[1,2,4]triazolo[5,1-c][1,2,4]triazines in good yields. The reaction of the iminaphosphorane 4 with thioureas leads directly to 2 in moderate yields.