1: With lithium aluminium tetrahydride; chloro-trimethyl-silane in tetrahydrofuran T=-78 - 20°C; 21 h; Inert atmosphereSchlenk technique; 2: With water; sodium hydroxide in tetrahydrofuran Inert atmosphereSchlenk techniqueCooling with ice;

1.1: 2,2'-azo-bisisobutyronitrile / 21 h / 65 °C / |Inert atmosphere; |Schlenk technique 2.1: lithium aluminium tetrahydride; chloro-trimethyl-silane / tetrahydrofuran / 21 h / -78 - 20 °C / |Inert atmosphere; |Schlenk technique 2.2: |Inert atmosphere; |Schlenk technique; |Cooling with ice View Scheme

(i) KOtBu, (ii) LiAlH4; Multistep reaction;