反应条件
1: 1) ethyl iodide / 1) 16 h, 2) 50 deg C, 1 h 2: 46 percent / 120 h / Heating 3: 66 percent / 30percent HBr / acetic acid / 2 h / 55 °C View Scheme
参考文献
Haak, Henk J. W. van den; Plas, Henk C. van der; Veldhuizen, Beb van
Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 1349 - 1352