potassium carbonate in N,N-dimethyl-formamide T=25°C; 48 h;

1: butyl lithium; diethyl ether / anschliessendes Behandeln mit festem Kohlendioxid 2: hydrogen chloride View Scheme

hydrogenchloride

methanol; potassium hydroxide T=110 - 120°C;

potassium carbonate in acetone 12 h; Heating;

1: hydrogen chloride 2: potassium hydroxide; methanol / 110 - 120 °C View Scheme

potassium hydroxide in methanol; water 4 h; Heating;

1: 96 percent / KOH / methanol; H2O / 4 h / Heating 2: thionyl chloride / 1 h / Heating 3: 1.) Mg 4: 56 percent / CH3CO2NH4 / acetic acid / Heating 5: 99 percent / pyridinium hydrobromide perbromide / ethanol / 0.17 h / Ambient temperature 6: 86 percent / 1M BBr3 / CH2Cl2 / 12 h / -20 °C View Scheme