1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / 0 °C 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / ethyl acetate / 3 h / 100 °C 3: scandium tris(trifluoromethanesulfonate); sodium sulfate / N,N-dimethyl-formamide / 20 h / 100 °C / |Schlenk technique; |Inert atmosphere; |Green chemistry View Scheme