First Asymmetric Synthesis of Orthoquinone Monoketal Enantiomers via Anodic Oxidation
作者:Stéphane Quideau、Isabelle Fabre、Denis Deffieux
DOI:10.1021/ol048030k
日期:2004.11.1
An asymmetric synthesis of orthoquinone monoketals was accomplished using anodic oxidation to convert aryl methyl ethers bearing a chiral ethanol unit into orthoquinone bisketals, followed by monohydrolysis of their dimethyl ketal unit. All four possible stereoisomers were generated in a diastereoselective manner by varying the attachment point of the chiral pro-ketal alcoholic auxiliary to the starting
使用阳极氧化将带有手性乙醇单元的芳基甲基醚转化为邻醌双缩酮,然后对其二甲基缩酮单元进行单水解,从而完成了对醌单缩酮的不对称合成。通过改变手性前缩酮醇助剂与起始芳烃的连接点,以非对映选择性的方式产生了所有四种可能的立体异构体。对随后的亲核加成反应的初步筛选证实了这些合成子在不对称合成中的潜在用途。[反应:看文字]