Reactions of Azulene and 2-Aminoazulene Derivatives with Isocyanates, Ketenes and Nitrile Oxides

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Noritaka Abe, Hiroshi Chijimatsu, Satoru Kondo, Hiroyuki Watanabe and Katsuhiro Saito


Abstract

Azulene reacted with heterocumulenes in the presence of Lewis acid to give 1-substituted azulenes whereas 2-aminoazulenes reacted with heterocumulenes to give 2-(substituted amino)azulenes together with 1-substituted azulenes.


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