反应条件
1: 79 percent / benzene; xylene / 4 h / Heating
2: 91 percent / sodium acatate / acetic acid / 30 h / Heating
3: 98 percent / H2SO4 / 1.) 1 h.; 2.) rt. 3d.; 3.) AcOH, reflux, 2h.
4: 83 percent / HCl / ethanol; tetrahydrofuran; acetic acid / 1.) EtOH, THF, 0 deg C, 20 min.; 2.) AcOH, 0 deg C., 30 min; 3.) rt. overnight
5: 94 percent / HCl / acetic acid / 9 h / Heating
6: tetrahydrofuran; hexamethylphosphoric acid triamide / 18 h / Ambient temperature
7: 56 percent / trimethylsilyl triflate / tetrahydrofuran; hexamethylphosphoric acid triamide; diethyl ether / 1.) -20 deg C, 15 min.; 2.) -40 deg C, 2 h.; 3.) -40 deg C, 1 h.
View Scheme
参考文献
Kimura; Suzuki; Matsumoto; et al.
Bulletin of the Chemical Society of Japan, 1986 , vol. 59, # 2 p. 415 - 421
