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Autori: Alexandru C. Razus* Liviu Birzan, Claudia Pavel, Oana Lehadus, Andreea Corbu, Filip Chiraleu and Cristian Enache
Editorial: Journal Heterocyclic Chemistry, 44, p.245-50, 2007.
4-Azulen-1-yl substituted 2,6-dimethyl-and 2,6-diphenyl-pyridines are obtained in good yields from the reaction of corresponding 4-azulen-1-yl-pyranylium salts and ammonium acetate in ethanol or starting from 4-chloro-2,6-diphenyl-pyranylium salts in two steps: reaction with azulenes followed by in situ treatment with ammonium acetate. The effect of substitution at the 3-position of the heterocycle was taken into account. The structure assignment was accomplished with NMR and uv-vis spectra.
Cuvinte cheie: azulene, saruri de piridiniu, piridine // azulene, pyridinium, pyridine