7-alkyl-1,3,7-triazapyrenium salts: A rare case of double nucleophilic substitution
β Scribed by O. P. Demidov; I. V. Borovlev; S. V. Pisarenko; O. A. Nemykina
- Book ID
- 111460416
- Publisher
- Springer
- Year
- 2010
- Tongue
- English
- Weight
- 140 KB
- Volume
- 80
- Category
- Article
- ISSN
- 1070-3632
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## Abstract Condensation of 2βhydroxyacetophenone with benzaldehyde in the presence of 70% perchloric acid in ethyl orthoformate gave the corresponding 4βethoxyflavylium perchlorate, which was treated with aqueous ammonia or methylamine solution to afford 1,6,7,8βsubstituted 2β(3β²,4β²βsubstitutedβph