Pyrimido [5, 4-e]-as-triazines. VI. Preparation of some 5-substituted 7-aminopyrimido [5, 4-e]-as-triazines

C Temple Jr, CL Kussner…

Index: Temple,C. et al. Journal of Organic Chemistry, 1971 , vol. 36, p. 3502 - 3506

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Citation Number: 13

Abstract

The rearrangement of one thiazolo [5, 4-d] pyrimidine to a pyrimido [5, 4-e] triazine and another to a 9-aminopurine is described. Reaction of methyl 6-amino-as-triazine-5- carboxylate (18) with guanidine to give 7-aminopyrimido [5, 4-e]-as-triazin-5 (6H)-one (2 1) was unsuccessful. The successful route to 7-amino compounds of this type involved the preparation and cyclization of 2, 5-diamino-6-(benzylthio)-4-hydrazinopyrimidine (30) to ...