in hydrogenchloride; methanol T=120°C; 0.0333333 h; microwave irradiation;

1: boron trifluoride etherate / 1.) THF, reflux, 4 h; 2.) DMF, reflux, 5 h. 2: 93 percent / dimethylformamide / 8 h / Heating 3: 68 percent / methanol / 5 h / Heating 4: 1N HCl / methanol / 1 h / Heating View Scheme

1: 68 percent / methanol / 5 h / Heating 2: 1N HCl / methanol / 1 h / Heating View Scheme

1: 93 percent / dimethylformamide / 8 h / Heating 2: 68 percent / methanol / 5 h / Heating 3: 1N HCl / methanol / 1 h / Heating View Scheme

hydrogenchloride in methanol 1 h; Heating; Yield given. Yields of byproduct given;