sulfuric acid in acetonitrile T=80°C; Fischer cyclization;
参考文献
Hillier, Michael C.; Marcoux, Jean-Francois; Zhao, Dalian; Grabowski, Edward J. J.; McKeown, Arlene E.; Tillyer, Richard D.
Journal of Organic Chemistry, 2005 , vol. 70, # 21 p. 8385 - 8394
