论文部分内容阅读
A simple and efficient method for the transition metal-free intramolecular trifluoromethylacylation and trifluoromethylarylation of alkenes with inexpensive CF3SO2Na and K2S2O8 in aqueous media has been developed,respectively affording the highly regio-and chemoselective synthesis of CF3-functionalized chroman-4-ones and chromanes in satisfactory yields.