## Abstract Pyrazolo‐[3,4‐__d__]pyrimidine‐4,6‐diones **5** and pyrazolo[4,3‐__d__]pyrimidine‐5,7‐diones **7** were synthesized by Curtius rearrangement of pyrazolic mono‐esters **2** and **3** followed by hetero‐cyclization __via__ the ureas derivatives **4** and **6** under alkaline conditions.
Synthesis of 4-Amino-7-phenylpyrido[4,3-d]pyrimidine 6-Oxides.
✍ Scribed by N. Cikotiene; R. Buksnaitiene; A. Brukstus
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 15 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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