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Synthesis of 5-(trifluoromethyl)-5H-chromeno[3,4-b]pyridines from 3-nitro-2-(trifluoromethyl)-2H-chromenes and aminoenones derived from acetylacetone and cyclic amines

✍ Scribed by Korotaev, Vladislav Yu.; Barkov, Alexey Yu.; Sosnovskikh, Vyacheslav Ya.


Book ID
120307233
Publisher
Elsevier Science
Year
2013
Tongue
French
Weight
507 KB
Volume
54
Category
Article
ISSN
0040-4039

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Synthesis of trifluoromethylated pyrido[
✍ Masahiko Takahashi; Hironori Nagaoka; Kazuhiro Inoue 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 213 KB 👁 1 views

## Abstract 5 or 7‐Trifluoromethyl‐1,2,3,4‐tetrahydropyrido[2,3‐__d__]pyrimidine‐2,4‐diones **3**, **5**, **10**, **13** and 4‐ or 6‐trifluoromethylpyrazolo[3,4‐__b__]pyridines **15**, **16**, **19**, **21** were prepared from 6‐aminouracils and 5‐aminopyrazoles, respectively, in good yields by the