反应条件
1: 1.) (COCl)2, DMSO 2.) Et3N / 1.) -60 deg C
2: 50 percent / (SiMe3)2NH / -20 - 25 °C
3: -80 °C
4: 80 percent / diethyl ether / 1.) -95 deg C, 2.5 h, 2.) -60 deg C, 30 min.
5: 100 percent / 1,1'-carbonyldiimidazol / toluene / 2 h / 115 °C / var.reag.: MsCl, Et3N, toluene, 2 h
View Scheme
参考文献
Sarkar, Tarun K.; Ghosh, Sunil K.
Tetrahedron Letters, 1987 , vol. 28, # 18 p. 2061 - 2064
