Synthesis of 1,6′-Bi- and 1,6′:3,6″-terazulenes from 1-pyridyl- and 1,3-Di(pyridyl)azulenes by the Ziegler-Hafner method

Taku Shoji, Atsuyo Yamamoto, Erika Shimomura, Mitsuhisa Maruyama, Shunji Ito, Tetsuo Okujima, Kozo Toyota, Noboru Morita

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9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)638-640
Number of pages3
JournalChemistry Letters
Volume42
Issue number6
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Chemistry(all)

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