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Ring Transformations of Heterocyclic Compounds. Part 22. Pyrido[1,2-a]indolium Salts from 2-Methyl-3H-indoles by Pyrylium Mediated Three Carbon Anellation.

✍ Scribed by Thomas Zimmermann; Lothar Hennig


Publisher
John Wiley and Sons
Year
2010
Weight
33 KB
Volume
33
Category
Article
ISSN
0931-7597

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📜 SIMILAR VOLUMES


Ring transformations of heterocyclic com
✍ Thomas Zimmermann; Lothar Hennig 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 184 KB

## Abstract The synthesis of pyrido[1,2‐__a__]indolium perchlorates **8,11** from 2,4,6‐triarylpyrylium perchlorates **1** and 2‐methyl‐3__H__‐indoles **6,9** in the presence of a basic condensing agent (anhydrous sodium acetate, piperidine acetate, triethylamine/acetic acid, triethylamine) in etha