silver nitrate in acetonitrile 2 h; Heating;

1: 1.) p-toluenesulfonic acid, 2.) 3N aq. HCl / 1.) toluene, 2 h, reflux, 2.) THF, 24 h, reflux 2: 95 percent / thionyl chloride / CHCl3 / 3 h / Heating 3: 88 percent / silver nitrate / acetonitrile / 2 h / Heating View Scheme

1: 170 °C 2: 1.) p-toluenesulfonic acid, 2.) 3N aq. HCl / 1.) toluene, 2 h, reflux, 2.) THF, 24 h, reflux 3: 95 percent / thionyl chloride / CHCl3 / 3 h / Heating 4: 88 percent / silver nitrate / acetonitrile / 2 h / Heating View Scheme

1: 95 percent / thionyl chloride / CHCl3 / 3 h / Heating 2: 88 percent / silver nitrate / acetonitrile / 2 h / Heating View Scheme

1: aq. Na2CO3 / methanol / 12 h / Ambient temperature 2: 95 percent / thionyl chloride / CHCl3 / 3 h / Heating 3: 88 percent / silver nitrate / acetonitrile / 2 h / Heating View Scheme