potassium hydroxide; N-benzyl-N,N,N-triethylammonium chloride in chlorobenzene Ambient temperature;

1: 60 percent / gl. AcOH / various solvent(s) / 2 h / 200 °C 2: 75 percent / Lawesson's reagent / various solvent(s) / 1 h / 150 °C 3: 87 percent / benzyltriethylammonium chloride (TEBA), 48percent aq. KOH / chlorobenzene / Ambient temperature View Scheme

1: 75 percent / Lawesson's reagent / various solvent(s) / 1 h / 150 °C 2: 87 percent / benzyltriethylammonium chloride (TEBA), 48percent aq. KOH / chlorobenzene / Ambient temperature View Scheme

1: 70 percent / TiCl4, anisole / toluene / 6 h / Heating 2: 60 percent / gl. AcOH / various solvent(s) / 2 h / 200 °C 3: 75 percent / Lawesson's reagent / various solvent(s) / 1 h / 150 °C 4: 87 percent / benzyltriethylammonium chloride (TEBA), 48percent aq. KOH / chlorobenzene / Ambient temperature View Scheme

1: 60 percent / gl. AcOH / various solvent(s) / 2 h / 200 °C 2: 75 percent / Lawesson's reagent / various solvent(s) / 1 h / 150 °C 3: 87 percent / benzyltriethylammonium chloride (TEBA), 48percent aq. KOH / chlorobenzene / Ambient temperature View Scheme