1: With trifluoromethylsulfonic anhydride; (MeO2CH2CH2)2SO in dichloromethane T=-35 - 20°C; 2: With triethylamine in tetrahydrofuran T=20°C; 12 h; 3: With potassium tert-butylate in tetrahydrofuran T=-78°C; 0.166667 h; Title compound not separated from byproducts;
参考文献
Journal of Organic Chemistry, , vol. 68, # 14 p. 5758 - 5761
1: 57 percent / dimethylformamide / 14 h / 100 °C 2: dimethylformamide / 5 h / 160 °C 3: dimethylformamide 4: 67 percent / dimethylformamide / 22 h / 160 °C 5: Na / N,N-dimethyl-acetamide / 15 h / 100 °C View Scheme
