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Synthesis of pyrido[3′,2′:4,5]pyrrolo-and pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine derivatives using the thorpe-ziegler cyclization reaction

✍ Scribed by M. Yu. Yakovlev; A. V. Kadushkin; V. G. Granik


Publisher
Springer
Year
1997
Tongue
English
Weight
300 KB
Volume
31
Category
Article
ISSN
0091-150X

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📜 SIMILAR VOLUMES


Ring closure reactions of pyrido[2,3-d]p
✍ Dang Van Tinh; Wolfgang Stadlbauer 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 419 KB

## Abstract magnified image The cyclocondensation of 5‐hydroxy‐pyrido[2,3‐__d__]pyrimidines **1** with malonates gives pyrano[2′,3′:4,5]‐pyrido[2,3‐__d__]pyrimidines **2**. Nitration of **1** and reduction with zinc in the presence of carboxylic acids/anhydrides gave 2‐alkyloxazolo[5′,4′:4,5]pyrid