Catalytic Selenium-Promoted Intermolecular Friedel–Crafts Alkylation with Simple Alkenes
作者:E Tang、Yinjiao Zhao、Wen Li、Weilin Wang、Meng Zhang、Xin Dai
DOI:10.1021/acs.orglett.5b03579
日期:2016.3.4
A method for conducting selenium-promoted intermolecular Friedel–Crafts (F–C) alkylation reactions has been developed with simple alkenes using trimethylsilyl trifluoromethanesulfonate as a catalyst and N-phenylselenophthalimide as an efficient selenium source. Electron-rich arenes smoothly underwent F–C alkylation with a variety of alkenes to afford alkylated products in good yield and with high regioselectivity
Peraceticacid promoted C–Se coupling reaction of arenes with diselenides under metal-free and solvent-free conditions has been described. The resulting selenide ethers were obtained in good to excellent yields. Peraceticacid provided the selenide ethers via sp 2 C–H selenation whereas previously in case of DTBP sp 3 C–H selenation was observed.