𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of 4-ethoxyflavylium salts and flavones

✍ Scribed by G. N. Dorofeenko; V. V. Tkachenko; V. I. Yakovenko; V. V. M Ezheritskii; É. T. Oganesyan

Book ID
112341652
Publisher
Springer US
Year
1977
Tongue
English
Weight
263 KB
Volume
13
Category
Article
ISSN
0009-3122

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Convenient synthesis of 1,6,7,8-substitu
Convenient synthesis of 1,6,7,8-substituted 2-(3′,4′-substituted-phenyl)-4-quinolones via a 4-ethoxyflavylium salt
✍ Shingo Sato; Takeshi Watanabe; Hironobu Kumagai; Nobuo Kitamura; Shigeru Matsuba 📂 Article 📅 1999 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 360 KB

## Abstract Condensation of 2‐hydroxyacetophenone with benzaldehyde in the presence of 70% perchloric acid in ethyl orthoformate gave the corresponding 4‐ethoxyflavylium perchlorate, which was treated with aqueous ammonia or methylamine solution to afford 1,6,7,8‐substituted 2‐(3′,4′‐substituted‐ph