Tunable Phosphine-Triggered Cascade Reactions of MBH Derivatives and 3-Acyl-2<i>H</i>-chromen-2-ones: Highly Selective Synthesis of Diverse Chromenones
作者:Wei Yuan、Hu-Fei Zheng、Zhi-Hua Yu、Zi-Long Tang、De-Qing Shi
DOI:10.1002/ejoc.201301358
日期:2014.1
Diversechromenones were synthesized through tunable phosphine-mediated cascadereactions between 3-acyl-2H-chromen-2-ones and Morita–Baylis–Hillman (MBH) derivatives. With different phosphine loadings and reaction temperatures, MBHderivatives act either as C1 or C3 synthons for the construction of potential biologically active 3-dihydrofuran-fused chromen-2-ones, 4-allyl-3-acyl-chromen-2-ones, or