trifluoroacetic acid in dichloromethane T=0 - 20°C;
参考文献
Banerji, Biswadip; Conejo-Garcia, Ana; McNeill, Luke A.; McDonough, Michael A.; Buck, Matthew R. G.; Hewitson, Kirsty S.; Oldham, Neil J.; Schofield, Christopher J.
Chemical Communications, 2005 , # 43 p. 5438 - 5440