The synthesis of 1,6′-biazulenes 3a and 3b and 1,6′:3,6″- terazulenes 7a and 7b was established by one-pot reactions via the Zincke-type ring-opening of the corresponding pyridinium salts with diethylamine, followed by the reaction with cyclopentadiene in the presence of sodium methoxide. The intramolecular charge-transfer characters between azulene rings were investigated by UVvis spectroscopy and theoretical calculations.
|Number of pages||3|
|Publication status||Published - 2013|
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