A new synthesis of 2,8-disubstituted pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidines
โ Scribed by Anton V. Dolzhenko; Giorgia Pastorin; Anna V. Dolzhenko; Wai Keung Chui
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- French
- Weight
- 968 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract Some new 1,2,3โtriazolo[4,5โ__e__]โ1,2,4โtriazolo[3,4โ__c__]pyrimidmes were prepared starting from the corresponding 1,2,3โtriazolo[4,5โ__d__]pyrimidines __via__ the formation of the 1,2,4โtriazole ring. Thus suitable hydrazino derivatives 6 were condensed with triethyl orthoformate, tr
## Abstract The 7โchloroโ3โ(2โchlorobenzyl)โ and 7โchloroโ3โ(2โfluorobenzyl)โ1,2,3โtriazolo[4,5โ__d__]pyrimidines (**1** and **4**), by nucleophilic replacement with some hydrazides, gave the corresponding 7โhydrazidoderivatives (**2aโe** and **5aโe**). These, by heating in Dowtherm, underwent an i