diisopropyl-carbodiimide; copper(l) chloride in dichloromethane T=40°C; 32 h;

potassium carbonate in methanol 16 h; Ambient temperature;

1: 63 percent / CH2Cl2 / 12 h / Ambient temperature 2: 90 percent / ethanol / 10 h / Ambient temperature 3: 93 percent / K2CO3 / methanol / 16 h / Ambient temperature View Scheme

1: 90 percent / ethanol / 10 h / Ambient temperature 2: 93 percent / K2CO3 / methanol / 16 h / Ambient temperature View Scheme