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Azulene-substituted pyridines and pyridinium salts. Synthesis and structure. 2. Azulene-substituted pyridinium salts

✍ Scribed by Alexandru C. Razus; Liviu Birzan; Claudia Pavel; Oana Lehadus; Andreea Corbu; Filip Chiraleu; Cristian Enache

Publisher
Journal of Heterocyclic Chemistry
Year
2007
Tongue
English
Weight
579 KB
Volume
44
Category
Article
ISSN
0022-152X

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✦ Synopsis

ClO 4 -N + Me(Ph) R Az Me(Ph) R 1 ClO 4 -R 1 = Me, Bu, iPr, Bn, Ph, tBu

4-Azulen-1-yl substituted 2,6-dimethyl-and 2,6-diphenyl-pyridinium salts are obtained in yields between 50 % and 100 % in the reaction of corresponding 4-azulen-1-yl-pyranylim salts and various amines. The effects of amine structure and of substitution in the heterocycle or at azulene moieties on the synthesis have been investigated. The uv-vis and NMR spectra of reaction products are examined and discussed in correlation with their structure.

📜 SIMILAR VOLUMES

Azulene-Substituted Pyridines and Pyridi
Azulene-Substituted Pyridines and Pyridinium Salts. Synthesis and Structure. Part 2. Azulene-Substituted Pyridinium Salts.
✍ Alexandru C. Razus; Liviu Birzan; Claudia Pavel; Oana Lehadus; Andreea Corbu; Fi 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 34 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Azulene-substituted pyridines and pyridi
Azulene-substituted pyridines and pyridinium salts. Synthesis and structure. 1. Azulene-substituted pyridines
✍ Alexandru C. Razus; Liviu Birzan; Claudia Pavel; Oana Lehadus; Andreea Corbu; Fi 📂 Article 📅 2007 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 347 KB

in ethanol 1) +AzH in CH 3 NO 2 2) AcONH 4 (a) (b) 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

Azulene-substituted pyranylium salts. Sy
Azulene-substituted pyranylium salts. Syntheses and products characterization
✍ Alexandru C. Razus; Liviu Birzan; Claudia Pavel; Oana Lehadus; Andreea Cristina 📂 Article 📅 2006 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 660 KB

## Abstract magnified image The synthesis of 4‐azulene‐substituted 2,6‐diphenyl‐ and 2,6‐dimethyl‐pyranylium salts and 2‐azulenesubstituted 4,6‐dimethyl‐pyranylium salts by nucleophilic substitution at pyranylium moiety with various azulenes was studied. The starting materials for 2,6‐diphenyl der