boron trifluoride diethyl etherate; triphenylbismuth(V) difluoride in dichloromethane -78 deg C -> r.t.; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
Davis, Anthony P.; Jaspars, Marcel
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992 , # 16 p. 2111 - 2118
trifluorormethanesulfonic acid in tetrachloromethane
参考文献
Olah, George A.; Husain, Altaf; Gupta, B. C. Balaram; Salem, George F.; Narang, Subhash C.
Journal of Organic Chemistry, 1981 , vol. 46, p. 5212 - 5214