1: 5.7 g / MgSO4 / CHCl3 / 3 h / Heating 2: 1.) BH3-Me2NH, 2.) NaNO2 / 1.) AcOH, steam-bath, 30 min, 2.) water, 20 deg C, 15 h 3: n-PrNH2 / 24 h / Heating View Scheme

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