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Synthesis of 1,3-Bis(tetracyano-2-azulenyl-3-butadienyl)azulenes by the [2+2] Cycloaddition-Retroelectrocyclization of 1,3-Bis(azulenylethynyl)azulenes with Tetracyanoethylene

✍ Scribed by Shoji, Taku; Maruyama, Mitsuhisa; Maruyama, Akifumi; Ito, Shunji; Okujima, Tetsuo; Toyota, Kozo


Book ID
126196990
Publisher
John Wiley and Sons
Year
2014
Tongue
English
Weight
655 KB
Volume
20
Category
Article
ISSN
0947-6539

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## Abstract Tetrahydropyridines **4a, 4b, 4c** and pyridines **7a, 7b, 7c, 9a, 9b, 9c** were synthesized by a [4 + 2] cycloaddition between 1,4‐bis aryl‐2‐aza‐1,3‐butadienes and electron‐poor dienophiles. Dimeric cycloadducts **6a, 6b, 6c**, were also isolated indicating a competition between the e