1: 92 percent / benzyl(triethyl)ammonium chloride; NaOH / 5 h / 20 °C 2: 95 percent / HCl / tetrahydrofuran; propan-2-ol / 5 h / 100 °C 3: H2 / Pd/C / ethyl acetate 4: 79 percent / LiCl / dimethylformamide View Scheme

1: 92 percent / benzyl(triethyl)ammonium chloride; NaOH / 5 h / 20 °C 2: 95 percent / HCl / tetrahydrofuran; propan-2-ol / 5 h / 100 °C 3: 72 percent / H2 / Pd/C / ethanol / 1 h / 760 Torr View Scheme