1.1: morpholine / Raney-nickel / N,N-dimethyl acetamide / 1 h / 40 - 110 °C / Inert atmosphere 2.1: hydrogen; acetic acid / Raney-nickel / water; tetrahydrofuran / 3 h / 15 - 25 °C 2.2: 10 - 35 °C / pH 7 - 8 2.3: 15 - 25 °C / pH 3 - 3.5 View Scheme