Multi-step reaction with 2 steps 1: 86 percent / p-TsOH monohydrate / benzene / Heating; the formed water was remowed by azeotr. distill.2: 76 percent / acetone / 25 °C
参考文献
Katritzky, Alan R.; Fan, Wei-Qiang; Li, Qiao-Ling Tetrahedron Letters, 1987 , vol. 28, # 11 p. 1195 - 1198
