tetrabutylammonium fluoride in isopropyl alcohol 24 h; Heating;

1: 78 percent / H2S, diethylamine / dimethylformamide / 3.5 h / 55 °C 2: 59 percent / CH2Cl2 / 12 h 3: 95 percent / ammonium bromide / propan-2-ol / 24 h / Heating View Scheme

1: 59 percent / CH2Cl2 / 12 h 2: 95 percent / ammonium bromide / propan-2-ol / 24 h / Heating View Scheme

1: 35.0 g / NaOH / H2O; diethyl ether / 4 h 2: 78 percent / H2S, diethylamine / dimethylformamide / 3.5 h / 55 °C 3: 59 percent / CH2Cl2 / 12 h 4: 95 percent / ammonium bromide / propan-2-ol / 24 h / Heating View Scheme