trifluorormethanesulfonic acid in neat (no solvent) T=100°C; 2 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
参考文献
Choudary, Boyapati M.; Chowdari, N. Sreenivasa; Kantam, M. Lakshmi
Journal of the Chemical Society, Perkin Transactions 1, 2000 , # 16 p. 2689 - 2693