Synthesis of Derivatives of Pyrazolo[3,4-d]pyrimidines by Reaction of 3,5-Bis(dimethylaminomethylene)amino-4-methoxycarbonylpyrazole and 4-Cyanopyrazole with Amines
โ Scribed by V. A. Makarov; O. B. Ryabova; L. M. Alekseeva; A. S. Shashkov; V. G. Granik
- Book ID
- 110440483
- Publisher
- Springer US
- Year
- 2003
- Tongue
- English
- Weight
- 150 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0009-3122
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## 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.
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v