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New one-step procedure for the synthesis of 6H-chromeno[4,3-b]quinolines and 8a,9,14,14a-tetrahydro-8H-benzo[5,6]chromeno[4,3-b]quinolines

✍ Scribed by M. M. Tomashevskaya; O. A. Tomashenko; A. A. Tomashevskii; V. V. Sokolov; A. A. Potekhin


Book ID
111464210
Publisher
SP MAIK Nauka/Interperiodica
Year
2007
Tongue
English
Weight
185 KB
Volume
43
Category
Article
ISSN
1070-4280

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✍ Jairo Quiroga; Braulio Insuasty; Angelina Hormaza; Claudio Saitz; Carolina Julli 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 215 KB

## Abstract Reaction of 5‐amino‐3‐methyl‐1‐phenylpyrazole (1a) and 5‐amino‐3‐(4‐chlorophenyl)‐1__H__‐pyrazole (1b) with dimedone (2) and __p__‐susbstituted benzaldehydes 3 in ethanol, afforded in all cases tricyclic linear 4‐aryl‐7,7‐dimethyl‐4,7,8,9‐tetrahydro‐6__H__‐pyrazolo[3,4‐__b__]quinolin‐5‐