trifluoroacetic acid in dichloromethane
4 h; Ambient temperature;
参考文献
Andrews, Mark D.; Brewster, Andrew G.; Crapnell, Katherine M.; Ibbett, Ashley J.; Jones, Tim; Moloney, Mark G.; Prout, Keith; Watkin, David
Journal of the Chemical Society - Perkin Transactions 1, 1998 , # 2 p. 223 - 235