Synthesis of 3-arylcoumarins through N-heterocyclic carbene catalyzed condensation and annulation of 2-chloro-2-arylacetaldehydes with salicylaldehydes
作者:Yuansong Jiang、Wanzhi Chen、Weimin Lu
DOI:10.1016/j.tet.2013.03.025
日期:2013.5
The condensation reaction of 2-chloro-2-arylacetaldehyde with salicylaldehyde catalyzed by N-heterocyclic carbene (NHC) leading to 3-arylcoumarin was studied. A number of 3-arylcoumarin derivatives were obtained in good to excellent yields via this umpolung reaction. This reaction is facile and experimentally simple and mild.
研究了N-杂环卡宾(NHC)催化2-氯-2-芳基乙醛与水杨醛的缩合反应,生成3-芳基香豆素。通过这种化学反应,以良好的产率获得了许多3-芳基香豆素衍生物。该反应是容易的,并且实验上简单温和。