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題 名 | Synthesis of 2,2'-biflavanones from flavone Via Electrolytic Reductive Coupling |
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作 者 | 陳阿煌; 鄭傑元; 陳嘉文; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 49:6 2002.12[民91.12] |
頁 次 | 頁1105-1109 |
分類號 | 341.94 |
關鍵詞 | Flavone; flavanone; Biflavanones; Electrolytic reductive coupling; Hydrodimerization; |
語 文 | 英文(English) |
英文摘要 | Flavone (1) was easily reduced by using the electrochemical method to give two hydrodimers of 2,2'-biflavanone (racemate) (5a) and 2,2'-biflavanone (meso) (5b) and one reductive product of flavanone (6). Their yields were dependent on the nature of electrodes, the kinds of supporting electrolytes and the reaction temperature. They were found to afford higher yields of 2.2'-biflavanone (racemate) (5a) and 2,2'--biflavanone (meso) (5b) (32.4% and 24.8%, 35.8% and 13.4% respectively,) in the reaction conditions of Pb(-)/C(+)- H �� SO �� -7F/mol and C(-)/C(+)-H �� SO �� -5F/mol. |
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