1: 1) PCl3 2) ZnCl2 / 1) a) 0.5h, 50 deg C b) 2.5h, 140 deg C 2) 5h, 140 to 210 deg C 2: 94 percent / water / methanol / 1 h / Heating 3: 69 percent / acetonitrile / 9 h / 80 °C View Scheme
参考文献
Yamada, Yoichi; Yasuda, Heinosuke; Saito, Toranosuke
Journal of Heterocyclic Chemistry, 1990 , vol. 27, # 4 p. 845 - 850