Nickel‐Catalyzed Decarbonylative Cycloaddition of Benzofuran‐2,3‐diones with Alkynes to Flavones
作者:Yu‐Yang Zhang、Han Li、Xiaoding Jiang、Chitreddy V Subba Reddy、Hao Liang、Yaqi Zhang、Rihui Cao、Raymond Wai‐Yin Sun、Man Kin Tse、Liqin Qiu
DOI:10.1002/adsc.202101241
日期:2022.2
the Nickel-catalyzed decarbonylative cycloaddition of benzofuran-2,3-diones with alkynes was established, and a variety of functional flavones were synthesized in 65–99% yields. Terminal alkynes with substituted phenyl groups and internal alkynes such as aryl acyl acetylenes and diphenylacetylenes are suitable for this reaction. The effects of bases on the reactions of different types of alkyne substrates
以dppe为配体,建立了镍催化苯并呋喃-2,3-二酮与炔烃的脱羰环加成反应,以65-99%的收率合成了多种功能性黄酮。具有取代苯基的末端炔烃和内部炔烃如芳酰基乙炔和二苯乙炔适用于该反应。还研究和讨论了碱对不同类型炔烃底物反应的影响。