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Communication | Regular issue | Vol 48, No. 4, 1998, pp.621-626
Published online, 1st January, 1970
DOI: 10.3987/COM-97-8098
Synthesis, Valence Isomerization, and Chemical Properties of 13-Azaazuleno-[1,2-g]bicyclo[4.3.1]deca-5b,6,8,10-tetraene

Tohru Takayasu, Yukihiko Tanaka, and Makoto Nitta*

*Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan

Abstract

1-Azaazulene-annulated tricyclo[4.3.1.01,6]deca-2,4,7-triene ring system was synthesized, and 1H- and 13C-NMR spctroscopy suggested that the compound exists in equilibrium between major amount of 13-azaazuleno[1,2-g]bicyclo[4.3.1]deca-5b,6,8,10-tetraene and minor amount of 13-azaazuleno[1,2-g]tricyclo[4.3.1.01,6]deca-5b,7,9-triene.