Rose Bengal-photosensitized oxidation of tertiary amines for the synthesis of bis-1,3-dicarbonyl compounds
作者:Ling-Ling Wu、Li Tang、Shui-Gen Zhou、Yi-Jie Peng、Xiao-Dong He、Zhi Guan、Yan-Hong He
DOI:10.1016/j.tet.2017.09.050
日期:2017.11
We report an example of Rose Bengal-photosensitized oxidation of tertiary amines for the synthesis of bis-1,3-dicarbonyl compounds. This protocol employs Rose Bengal as a visible-light absorbing photocatalyst without the need of a transition metal, and air as a green oxidant. Various functional groups were well tolerated to afford products with yields of up to 80% under mild reaction conditions.
我们报告一个玫瑰的孟加拉国光敏的氧化叔胺合成bis-1,3-二羰基化合物的例子。该协议采用玫瑰红作为可见光吸收光催化剂,不需要过渡金属,而空气作为绿色氧化剂。在温和的反应条件下,各种官能团均具有良好的耐受性,可提供产率高达80%的产物。