Cycloadditions of 1-substituted 1,3-butadienes with 4- or 3-substituted 2(1H)-quinolones acting as dienophiles |
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Authors: | Fujita Reiko Oikawa Kanako Yoshisuji Toshiteru Okuyama Yuko Nakano Hiroto Matsuzaki Hisao |
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Institution: | Tohoku Pharmaceutical University, Sendai, Japan. refujita@tohoku-pharm.ac.jp |
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Abstract: | Cycloadditions of 1,3-butadiene derivatives having an electron-rich group at the 1-position with 4- or 3-substituted 2(1H)-quinolones were carried out to give the richly functionalized phenanthridines under both atmospheric and high pressure conditions. Furthermore, the reactivity of 4- or 3-substituted 2(1H)-quinolones acting as a dienophile with 1-substituted dienes was examined using MO calculation. |
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