1: 4-(N,N-dimethlyamino)pyridine; dicyclohexyl-carbodiimide / dichloromethane / 16 h / 20 °C / Inert atmosphere 2: sodium chlorite; sodium dihydrogen phosphate monohydrate; recorcinol / tetrahydrofuran; water; tert-butyl alcohol / 20 °C View Scheme