反应条件
1: 1.) Ag2O, 2.) oxalyl chloride / 1.) water, 2.) CH2Cl2, 0 deg C to 20 deg C, then 40 deg C, 30 min 2: 20 h / 60 °C 3: 60 percent / anhydrous oxalic acid / 0.25 h / 110 - 120 °C View Scheme
参考文献
Tetrahedron Letters, , vol. 27, # 37 p. 4437 - 4440