A Facile Cross-Metathesis-Radical-Cyclisation
Approach to Monobenzannulated Spiroketals
作者:Margaret Brimble、Yen-Cheng Liu、Jonathan Sperry、Dominea Rathwell
DOI:10.1055/s-0028-1087942
日期:——
5,6-, and 6,6-mono-benzannulated spiroketals using a novel cross-metathesis-radical-cyclisation approach is reported. Cross metathesis between two olefin coupling partners resulted in the formation of a heterodimer which upon hydrogenation furnished a saturated alcohol product. Oxidative radical cyclisation then afforded the desired monobenz-annulated spiroketals in good overall yield.
报道了使用新型交叉复分解自由基环化方法合成一系列 5,5-、5,6- 和 6,6- 单苯并环化的螺缩酮。两个烯烃偶联伙伴之间的交叉复分解导致异二聚体的形成,该异二聚体在氢化时提供饱和醇产物。然后氧化自由基环化以良好的总产率提供所需的单苯环化的螺缩酮。