A Convenient Synthesis of New Pyrazolo[4,3- d ]pyrimidines and Their Fused Heterocycles
โ Scribed by Rote, Ramhari V.; Shelar, Deepak P.; Patil, Sandeep R.; Jachak, Madhukar N.
- Book ID
- 124055016
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2013
- Tongue
- English
- Weight
- 620 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0022-152X
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๐ SIMILAR VOLUMES
## Abstract Pyrazoloโ[3,4โ__d__]pyrimidineโ4,6โdiones **5** and pyrazolo[4,3โ__d__]pyrimidineโ5,7โdiones **7** were synthesized by Curtius rearrangement of pyrazolic monoโesters **2** and **3** followed by heteroโcyclization __via__ the ureas derivatives **4** and **6** under alkaline conditions.
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