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Pyrazolo[1,5-a]Pyrimidine: Synthesis and Regiospecific Electrophilic Substitution in the Pyrazole and/or Pyrimidine Rings

โœ Scribed by Lynch, Brian Maurice; Khan, Misbahul Ain; Sharma, Suresh Chandra; Teo, Huk Chia


Book ID
127337452
Publisher
NRC Research Press
Year
1975
Tongue
French
Weight
363 KB
Volume
53
Category
Article
ISSN
0008-4042

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Heterocyclic synthesis via enaminones: R
โœ Kamal M. Dawood; Zaghloul E. Kandeel; Ahmad M. Farag ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 164 KB ๐Ÿ‘ 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