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Heterocyclic Synthesis via Enaminonitriles: A Convenient Route to Some New Pyrazole, Isoxazole, Pyrimidine, Pyrazolo[1,5-a]pyrimidine, Pyrimido[1,2-a]benzimidazole and Pyrido[1,2-a]benzimidazole Derivatives†

✍ Scribed by Dawood, Kamal M.; Kandeel, Zaghloul E.; Farag, Ahmad M.


Book ID
120976056
Publisher
Science Reviews 2000 Ltd
Year
1998
Tongue
English
Weight
135 KB
Volume
4
Category
Article
ISSN
0308-2342

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Heterocyclic synthesis via enaminones: R
✍ Kamal M. Dawood; Zaghloul E. Kandeel; Ahmad M. Farag 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB 👁 2 views

## 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