aluminium trichloride in dichloromethane T=0°C; 1 h;

1: 51 percent / KOH, N2H4.H2O / various solvent(s) / 5.5 h / Heating 2: 29 percent / potassium metal / tetrahydrofuran / Ambient temperature 3: 32 percent Spectr. / AlCl3 / CH2Cl2 / 42 h / Ambient temperature; further catalyst SnCl4 4: KOH / methanol / hydrolysis View Scheme

1: 29 percent / potassium metal / tetrahydrofuran / Ambient temperature 2: 32 percent Spectr. / AlCl3 / CH2Cl2 / 42 h / Ambient temperature; further catalyst SnCl4 3: KOH / methanol / hydrolysis View Scheme

1: 32 percent Spectr. / AlCl3 / CH2Cl2 / 42 h / Ambient temperature; further catalyst SnCl4 2: KOH / methanol / hydrolysis View Scheme

potassium hydroxide in methanol hydrolysis;