Site-specific hydroxyalkylation of chromones <i>via</i> alcohol mediated Minisci-type radical conjugate addition
作者:Rongzhen Chen、Jin-Tao Yu、Jiang Cheng
DOI:10.1039/c8ob00392k
日期:——
A metal-free site-specific C2-hydroxyalkylation of chromones through the Minisci-type reaction using simple alcohols was developed. This transformation proceeds via radical sp3 C–H activation and subsequent conjugate addition, generating a series of C2-hydroxyalkylated chromanones in moderate to good yields. Besides, ethers were also compatible in this Minisci reaction, leading to corresponding C2
通过使用简单的醇类的Minisci型反应,开发了色酮的无金属位点特定的C2-羟烷基化反应。该转化过程通过自由基sp 3 C–H活化和随后的共轭加成进行,以中等至良好的产率生成了一系列C2-羟烷基化的发色酮。此外,醚在该Minisci反应中也相容,从而导致相应的C 2醚取代的发色酮。