hydrogenchloride in methanol 0.5 h; Ambient temperature;

1: 8.949 g / aq. hydrochloric acid / methanol / 0.5 h / Ambient temperature 2: 93 percent / anhydrous potassium carbonate / acetone / 12 h / Ambient temperature 3: 1.) 1.5 M methyl lithium / 1.) ethyl ether, 0 deg C, 15 min; 2.) 0 deg C, 30 min View Scheme