hydrogen; acetic acid; platinum(IV) oxide in ethanol P=1900 - 2280 Torr; 16 h;

1: TFA, AcOH / 0.5 h / Heating 2: H2, AcOH / PtO2 / ethanol / 16 h / 1900 - 2280 Torr View Scheme

1: TFA, AcOH / 0.5 h / Heating 2: H2, AcOH / PtO2 / ethanol / 16 h / 1900 - 2280 Torr View Scheme

1: NaBH4 / ethanol; various solvent(s) / 0.5 h / 45 - 55 °C 2: TFA / CH2Cl2 / 1 h / Heating 3: TFA, AcOH / 0.5 h / Heating 4: H2, AcOH / PtO2 / ethanol / 16 h / 1900 - 2280 Torr View Scheme

1: TFA / CH2Cl2 / 1 h / Heating 2: TFA, AcOH / 0.5 h / Heating 3: H2, AcOH / PtO2 / ethanol / 16 h / 1900 - 2280 Torr View Scheme

1: MgCl2*6H2O, N-methyl-2-pyrrolidone (NMP) / 1 h / 150 °C 2: NaBH4 / ethanol; various solvent(s) / 0.5 h / 45 - 55 °C 3: TFA / CH2Cl2 / 1 h / Heating 4: TFA, AcOH / 0.5 h / Heating 5: H2, AcOH / PtO2 / ethanol / 16 h / 1900 - 2280 Torr View Scheme

potassium carbonate; potassium iodide in various solvent(s) 16 h; Heating;