T=20°C; sowie bei 40grad; Kinetics;

T=20°C; sowie bei 40grad; Kinetics;

T=20°C; sowie bei 40grad; Kinetics;

sodium hydroxide; potassium hexacyanoferrate(III) in water T=5 - 20°C;

1.1: methanol; sodium tetrahydroborate / 3 h / -5 - 20 °C 2.1: trifluoroacetic acid / water / 1 h / 20 °C 2.2: 35 °C 2.3: 20 °C View Scheme

1: NaBH4 / ethanol / Ambient temperature 2: m-chloroperbenzoic acid / CH2Cl2 / 40 °C 3: 1) (CF3CO)2O / 1) CH2Cl2, 1 h, r.t. 2) 30 min, r.t., pH 4.0 (NaOAc or AcOH) 4: 50 percent / alumina / CH2Cl2 / 12 h / Ambient temperature View Scheme

1.1: KPF6 / water / 24 h / 20 °C 2.1: lithium triethylborohydride / tetrahydrofuran / 1 h / -70 - 0 °C / |Schlenk technique; |Inert atmosphere 2.2: 0 °C / pH 9.5 / |Schlenk technique; |Inert atmosphere 3.1: diisopropylamine; n-butyllithium / tetrahydrofuran; hexane / 2 h / -80 - 0 °C / |Schlenk technique; |Inert atmosphere 3.2: 2 h / -80 - -10 °C / |Schlenk technique; |Inert atmosphere 4.1: sodium tetrahydroborate / ethanol / 48 h / 0 °C 5.1: Wilkinson's catalyst; hydrogen / tetrahydrofuran / 72 h / 20 °C / 3750.38 Torr View Scheme

sodium tetrahydroborate in ethanol