Heterocyclic Iodoniums for the Assembly of Oxygen-Bridged Polycyclic Heteroarenes with Water as the Oxygen Source
摘要:
A diverse set of novel heterocyclic iodoniums was synthesized for the first time. The reactions of these unique iodoniums with environmentally benign water as the oxygen source provided structurally complex oxygen-incorporated heteropolycycles that are essential motifs in natural products and biologically active compounds. The transformation only required low-cost copper acetate. Further derivatization of the obtained polycycles expanded the structural diversity, which is important in the building of chemical libraries for drug discovery.
Synthesis of heterocyclic-fused benzofurans via C–H functionalization of flavones and coumarins
作者:Youngtaek Moon、Yechan Kim、Hyerim Hong、Sungwoo Hong
DOI:10.1039/c3cc44456b
日期:——
An efficient method to effect C-O cyclization was developed via the C-H functionalization of chromones and coumarins, affording heterocyclic-fused benzofurans.