1: sulfuryl chloride / CHCl3 / 1 h / Heating 2: methanol / Heating View Scheme

1: 81 percent / 1.3 eq. NaH / dimethylformamide / 1.) room temp., 90.5 h., 2.) 60 deg C, 3 h. 2: 86 percent / conc. hydrochloric acid / methanol / 2 h / Heating View Scheme