Addition of the tertiary radicals to electron-deficient 1,3-dienes using photoredox catalysis
作者:Samir Y. Abbas
DOI:10.1016/j.jphotochem.2021.113434
日期:2021.9
to different substituted electron-deficient 1,3-dienes was carried out. New carbon centers append δ-substituted-β,γ-unsaturated scaffold were constructed through the 1,6-addition of tertiary carbon radicals to alkyl penta-2,4-dienoate derivatives or hexa-3,5-dien-2-one derivatives. Unlike the latter dienes, addition tertiary carbon radicals to cyclic ketonic electron-deficient dienes produced conjugated
叔碳自由基是由 Ir 催化的光催化剂产生的。将产生的自由基加成到不同的取代缺电子 1,3-二烯上。新的碳中心附加δ-取代-β,γ-不饱和支架是通过叔碳自由基的1,6-加成到五-2,4-二烯酸烷基酯衍生物或六-3,5-二烯-2-酮衍生物上构建的. 与后一种二烯不同,将叔碳自由基加成到环状酮缺电子二烯上会产生共轭环烯酮。在每种情况下,立体异构体大部分是E立体异构体,而Z立体异构体被观察到为痕量。