triethylamine in methanol T=25°C; 67 h;

triethylamine in methanol T=25°C; 66 h;

1: 49 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 18 h / 25 °C 2: 82 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 21 h / 25 °C 3: 45 percent / triethylamine (33percent) / methanol / 66 h / 25 °C View Scheme

1: 49 percent / 4-dimethylaminopyridine, pyridine / CH2Cl2 / 47 h / 25 °C 2: 49 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 18 h / 25 °C 3: 82 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 21 h / 25 °C 4: 45 percent / triethylamine (33percent) / methanol / 66 h / 25 °C View Scheme

1: 49 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 18 h / 25 °C 2: 82 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 21 h / 25 °C 3: 45 percent / triethylamine (33percent) / methanol / 66 h / 25 °C View Scheme

1: 82 percent / 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 21 h / 25 °C 2: 45 percent / triethylamine (33percent) / methanol / 66 h / 25 °C View Scheme