1.1: 4.7818 g / aq. K2CO3 / methanol / 1 h / 20 °C 2.1: 77 percent / BF3*Et2O / 0.17 h / Heating 3.1: 0.01 h / microwave irradiation 3.2: 26 percent / methanesulfonyl chloride / 0.02 h / microwave irradiation View Scheme

potassium carbonate in methanol 1 h; Ambient temperature; Yield given;