@article{oai:soar-ir.repo.nii.ac.jp:00019891,
 author = {Shoji, Taku and Nagai, Daichi and Tanaka, Miwa and Araki, Takanori and Ohta, Akira and Sekiguchi, Ryuta and Ito, Shunji and Mori, Shigeki and Okujima, Tetsuo},
 issue = {21},
 journal = {CHEMISTRY-A EUROPEAN JOURNAL},
 month = {Apr},
 note = {Synthesis of 2-aminofuran derivatives with an azulene or N,N-dimethylanilino substituent was established by the formal [2+2] cycloaddition-retroelectrocyclization of 3-(1-azulenyl or N,N-dimethylanilino)-2-propyn-1-ols with tetracyanoethylene, followed by intramolecular nucleophilic addition to the initially formed tetracyanobutadiene moiety of the internal hydroxyl group that come from 2-propyn-1-ol. The reaction proceeds under mild conditions with short reaction period. The products of the reaction are readily available through a simple purification procedure. 2-Aminofuran derivatives obtained by this reaction could be converted into 6-aminofulvene derivatives upon reaction with various amines. The structures of 2-aminofuran and 6-aminopentafulvene with a N,N-dimethylanilino substituent were confirmed by single-crystal X-ray structural analysis., Article, CHEMISTRY-A EUROPEAN JOURNAL. 23(21):5126-5136 (2017)},
 pages = {5126--5136},
 title = {Synthesis of 2-Aminofurans by Sequential [2+2] Cycloaddition-Nucleophilic Addition of 2-Propyn-1-ols with Tetracyanoethylene and Amine-Induced Transformation into 6-Aminopentafulvenes},
 volume = {23},
 year = {2017}
}