Stereoselective synthesis of 3,4-di-substituted mercaptolactones via photoredox-catalyzed radical addition of thiophenols
作者:Farzana Kouser、Vijay Kumar Sharma、Masood Rizvi、Shaista Sultan、Neha Chalotra、Vivek K. Gupta、Utpal Nandi、Bhahwal Ali Shah
DOI:10.1016/j.tetlet.2018.04.046
日期:2018.5
A visible light mediated radical addition of thiophenols on 4-phenylbut-3-enoic acids to give diastereoselective synthesis of 3,4-disubstituted γ-lactones is reported. The reaction precludes the conventional prerequisite of conjugate addition. Furthermore, the lactones were successfully utilized in the synthesis of γ-ketoamides.
报道了在4-苯基丁-3-烯酸上可见光介导的苯酚的自由基加成,以非对映选择性合成3,4-二取代的γ-内酯。该反应排除了缀合物添加的常规先决条件。此外,内酯已成功用于γ-酮酰胺的合成。