effecting a rapid Saegusa-type oxidation of enol acetates is reported. This new method relies on the in situ elimination of an α-bromo intermediate to generate α,β-unsaturated ketones using copper(II) bromide. The methodology developed was applied to a range of substrates including a cyclohexanone, which could be directly converted to the corresponding phenol derivative. A catalytic system in which a
据报道,用于实现烯醇
乙酸酯的快速Saegusa型氧化的方案。这种新方法依赖于使用
溴化铜(II)原位消除α-
溴中间体以生成α,β-不饱和酮。开发的方法学应用于包括
环己酮在内的多种底物,可以直接转化为相应的
苯酚衍
生物。作为原理的证明,还开发了一种催化系统,其中使用亚
化学计量的CuBr 2成功氧化了未掩蔽的酮。