Formal Radical Cyclization onto Benzene Rings: A General Method and Its Use in the Synthesis of <i>e</i><i>nt</i>-Nocardione A
作者:Derrick L. J. Clive、Stephen P. Fletcher、Dazhan Liu
DOI:10.1021/jo030364k
日期:2004.5.1
An indirect method is described for effecting radical cyclization onto a benzene ring. Cross-conjugated dienones 6, which are readily prepared from phenols, undergo radical cyclization (6 → 7 → 8), and the products (8) are easily aromatized. The method has been applied to the synthesis of ent-nocardione A (21).
描述了一种用于将自由基环化到苯环上的间接方法。容易由酚制备的交叉共轭二烯酮6经历自由基环化(6 → 7 → 8),并且产物(8)容易被芳香化。该方法已应用于对苯甲酮A的合成(21)。