Synthesis of spirocyclic acetals by manganic acetate promoted additions to exocyclic enol ethers
作者:John M. Mellor、Shahid Mohammed
DOI:10.1016/s0040-4020(01)87231-8
日期:1993.8
Reaction of β-ketoesters and β-dicarbonyl compounds with manganic acetate in acetic acid gives intermediates, which add to exocyclic enol ethers to afford a variety of interesting spirocyclic acetals. As the exocyclic enol ethers are shown to be readily accessible, the results constitute a useful route based on radical chemistry to the synthesis of unsaturated spiroacetals.
β-酮酸酯和β-二羰基化合物与乙酸锰在乙酸中的反应生成中间体,将其加至环外烯醇醚中可制得各种有趣的螺环缩醛。由于显示出环外烯醇醚易于获得,因此该结果构成了基于自由基化学方法合成不饱和螺缩醛的有用途径。