AbstractA mild photocatalyzed approach to achieve the α‐alkylation of esters via formation of an α ‐radical is disclosed here. Cesium enolates of esters were generated in situ using Cs2CO3 as a base. A subsequent photocatalyzed oxidation at the α‐carbon of these enolates produced an α‐radical that was added into activated alkenes. This is the first example accessing the α‐carbon radical of esters in photoredox catalyed transformations.
摘要 本文公开了一种通过形成α-自由基实现酯的α-烷基化的温和光催化方法。使用 Cs2CO3 作为碱原位生成酯的铯烯醇化物。随后在这些烯醇的 α 碳处进行光催化氧化,产生了一种 α - 自由基,并将其添加到活化烯中。这是第一个在光氧化催化转化过程中使用酯的α-碳自由基的例子。