Synthesis of phenanthridones using Diels-Alder reactions of 4-substituted 2(1H)-quinolones acting as dienophiles |
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Authors: | Fujita R Watanabe K Yoshisuji T Matsuzaki H Harigaya Y Hongo H |
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Institution: | Tohoku Pharmaceutical University, Sendai, Japan. refujita@tohoku-pharm.ac.jp |
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Abstract: | Diels-Alder reactions of 2(1H)-quinolones having an electron-withdrawing group at the 4-position with 1,3-butadiene derivatives were carried out to give the phenanthridones richly functionalized under the conditions of atmospheric and high pressure. Furthermore, the reactivities of 4-substituted 2(1H)-quinolones acting as a dienophile were examined using MO calculation. |
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