Journal
CHEMISTRY LETTERS
Volume 42, Issue 6, Pages 638-640Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.130157
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- Grants-in-Aid for Scientific Research [25810019] Funding Source: KAKEN
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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 UV-vis spectroscopy and theoretical calculations.
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