Metal- and additive-free cascade trifluoroethylation/cyclization of organic isoselenocyanates by phenyl(2,2,2-trifluoroethyl)iodonium triflate
作者:Cheng-Long Zhao、Jin Shi、Xiuqiang Lu、Xun Wu、Cheng-Pan Zhang
DOI:10.1016/j.jfluchem.2019.109360
日期:2019.10
A novel and convenient cascade trifluoroethylation/cyclization of organic isoselenocyanates by phenyl(2,2,2-trifluoroethyl)iodonium triflate is reported. A series of 2-isoselenocyanobiaryls and aryl alkyl isoselenocyanates reacted with phenyl(2,2,2-trifluoroethyl)iodonium triflate in CH2Cl2 at 40 °C under metal- and additive-free conditions for 3 h to provide the corresponding trifluoroethylselenolated
报道了一种新的和方便的三氟苯磺酸苯基(2,2,2-三氟乙基)碘鎓级联三氟乙基化/环化异戊烯异氰酸酯的方法。在无金属和无添加剂的条件下,一系列的2-异硒氰基氰基芳基化物和芳基烷基异异氰酸酯与三氟甲磺酸苯基(2,2,2-三氟乙基)碘鎓在CH 2 Cl 2中在40°C下反应3小时,从而提供相应的三氟乙基硒化的菲啶和3,4-二氢异喹啉衍生物,收率良好。该反应代表了从有机异戊烯异氰酸酯中获得三氟乙基硒化的菲啶和3,4-二氢异喹啉的第一种通用方法。