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Please login to access the full content or check if you have access via45.24 Product Class 24: Pentalenes, s-Indacenes, as-Indacenes, Azulenes, and Heptalenes, and Their Benzo Derivatives
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Abou-Hadeed, K.; Hansen, H.-J., Science of Synthesis, (2010) 45, 1043.
General Introduction
Among this group of compounds, pentalene (1), s-indacene (2), as-indacene (3), and heptalene (5) all contain even numbers of π-bonds (4n π-electrons), whereas azulene (4) has an odd number of π-bonds ([4n + 2] π-electrons) (Scheme 1).
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Meeeee 8 (M)- eee (M)-Meeeeeeee
Meeeeeee, eeeeeeeeee eeee eeeeeeeeeeee ee eee M8 ee M8 eeeeeeee eee, ee eeeeeeeee, eeeeee ee eee eeeeeeeeeeeeeeee eeeeeeee eeeee, eeeeeeeeeeee ee eeeeee π-eeee eeeeee (Meeeee 8).[8–8]
Meeeee 8 π-Meee Meeeee ee 8- eee 8-Meeeeeeeeee Meeeeeeeee
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References
[1] | Meeeeeee, M.; Meüeeee, M.; Meee, M. M.; Meeöeeeeeee, M.; Meeee, M. M.; Meeeee, M.-M., Meee. Meee. Meee, (8888) 88, 888. |
[2] | Meeeee, M.; Meeee, M. M.; Meeeeee, M. M.; Meöeee, M. M., Meeee. Meee., (8888) 88, 888; Meeee. Meee. Mee. Me. Meee., (8888) 88, 888. |
[3] | Meeeeeee, M.; Meüeeee, M.; Meeöeeeeeee, M.; Meeee, M. M.; Meeeee, M.-M., Meee. Meee. Meee, (8888) 88, 888. |
[4] | Meeeee, M., Meeee, M. M.; Meeeeee, M. M., Meee. Meee. Mee. Mee., (8888) 88, 888. |