A Convenient and Efficient Synthesis of Coumarin-Containing Phthalides and Derivatives
作者:Xing-Wen Sun、Guoqiang Lin、Shao-Chun Shen
DOI:10.1055/s-0032-1316871
日期:——
obtained viareactions between 4-hydroxycoumarins (or 4-hydroxy-2-quinolones) with different 2-formylbenzoic acids in water as an environmentally friendly solvent. 4-Aryl substituted derivatives of 3-(4-hydroxy)coumarinylphthalide are obtained in excellent yields by initial conversion into the corresponding triflate and subsequent palladium-catalyzed Suzuki–Miyaura coupling with arylboronicacids. A highly