反应条件
1: 98 percent / SnCl2 * 2 H2O, conc. HCl / diethyl ether / 0.33 h / Ambient temperature 2: 87 percent / CH2Cl2 / 1.) -78 deg C, 1 h, 2.) RT, 23 h 3: 94 percent / 4 h / 140 °C 4: 67 percent / 80percent NaH / bis-(2-methoxy-ethyl) ether / 1.5 h / 185 °C View Scheme
参考文献
Journal of Heterocyclic Chemistry, , vol. 30, # 3 p. 771 - 779
