Pyrimidine Derivatives and Related Compounds, XI: Synthesis of some new Mercaptopyrazolo[1,5-a]pyrimidines and Mercaptopyrazolo[1,5-c]-as-triazines
β Scribed by Mohamed R. H. Elmoghayar; Mohamed K. A. Ibrahim; Ibrahim El-Sakka; Ahmed H. H. Elghandour; Mohamed H. Elnagdi
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 294 KB
- Volume
- 316
- Category
- Article
- ISSN
- 0365-6233
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π SIMILAR VOLUMES
Several new aminopyrazolo[ l,S-u]pyrimidines were synthesised by condensation of 33-diami-no4-(ethoxycarbonyl)pyrazoIe (1) with b-bifunctional reagents. The azo analogues of pyrazolo[l,5-u]pyrimidines, i. e. pyrazolo[l,4-c]-ar-triazines, were synthesised by coupling of diazotized 1 with agents conta
Thiazolylcyanothioacetanilides react with β£-haloketones and haloesters to give the corresponding thiophene or thiazole derivatives according to the reaction conditions. Pyrazolo [1,5-a]pyrimidines and pyrazolo [5,1-c]triazines were synthesized by reaction of 3-amino-4-(4Π-arylthiazol-2Π-yl)-5-phenyl
## 2-Acetylbenzothiazole (1) reacts with dimethylformamide dimethylacetal (DMF-DMA) to afford the enaminone 2. Compound 2 reacts regioselectively with some nitrilimines 5a-d and nitrile oxides 6b-d to afford the novel pyrazole and isoxazole derivatives 11a-d and 12b-d, respectively, which react wi