反应条件
1: 1.) p-TsOH*H2O / 1.) THF, reflux, 1 h, 2.) THF, H2O, reflux, 3 h 2: benzyltriethylammonium chloride, KOH / dimethylformamide / 6 h / Ambient temperature 3: 89.9 percent / aq. AcOH / 2 h / 100 °C 4: 68.8 percent / 2N aq. HCl / 2 h / Heating View Scheme
参考文献
Seki, Toshimi; Nakao, Tomio; Masuda, Takeshi; Hasumi, Kohichi; Gotanda, Kotaro; Ishimori, Tsutomu; Honma, Seijiro; Minami, Nobuyoshi; Shibata, Kenyu; Yasuda, Kikuo
Chemical and Pharmaceutical Bulletin, 1996 , vol. 44, # 11 p. 2061 - 2069