4-(N,N-dimethlyamino)pyridine; triethylamine in N,N-dimethyl-formamide T=20°C; 12 h;

1: sulfuric acid; potassium permanganate / water / 10 °C 2: dicyclohexyl-carbodiimide / 1,4-dioxane / 10 - 20 °C 3: triethylamine; 4-(N,N-dimethlyamino)pyridine / N,N-dimethyl-formamide / 12 h / 20 °C View Scheme

1: dicyclohexyl-carbodiimide / 1,4-dioxane / 10 - 20 °C 2: triethylamine; 4-(N,N-dimethlyamino)pyridine / N,N-dimethyl-formamide / 12 h / 20 °C View Scheme