N,N-dimethyl-thioformamide; sulfuric acid in acetone T=30°C; 3 h;
参考文献
Harrison, Daniel J.; Tam, Nga Chiu; Vogels, Christopher M.; Langler, Richard F.; Baker, R. Thomas; Decken, Andreas; Westcott, Stephen A.
Tetrahedron Letters, 2004 , vol. 45, # 46 p. 8493 - 8496