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Azulene‐substituted pyridines and pyridinium salts. Synthesis and structure. 2. Azulene‐substituted pyridinium salts
Author(s) -
Razus Alexandru C.,
Birzan Liviu,
Pavel Claudia,
Lehadus Oana,
Corbu Andreea,
Chiraleu Filip,
Enache Cristian
Publication year - 2007
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570440143
Subject(s) - azulene , chemistry , pyridinium , salt (chemistry) , amine gas treating , medicinal chemistry , nmr spectra database , organic chemistry , spectral line , physics , astronomy
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.