反应条件
1: 10.7 g / Br2, urea / 48 h / 20 °C 2: 1.) K2CO3 / 1.) DMFA, 20 deg C, 20 min, 2.) 72 h, 3.) water, 20 deg C, 24 h 3: 1.) conc. HCl, 2.) conc. HCl / 1.) water, reflux, 10 h, 2.) acetone, 60-70 deg C 4: 81 percent / SOCl2 / 48 h / 20 °C View Scheme
参考文献
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 36, # 8 p. 1663 - 1666
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 8 p. 1796 - 1799
