1: 11-bromo-undecanoic acid With 1-hydroxy-pyrrolidine-2,5-dione; dicyclohexyl-carbodiimide in dichloromethane T=25°C; 2 h; 2: 1-dodecylamine With 4-(N,N-dimethlyamino)pyridine in dichloromethane T=35°C; 2 h; Further stages.;

1: SOCl2 / CH2Cl2 / 2 h / Heating 2: 2.4 g / Et3N / CH2Cl2 / 12 h / Heating View Scheme

triethylamine in dichloromethane 12 h; Heating;

potassium carbonate in acetone 48 h; Heating;