sodium dithionite; sodium hydrogencarbonate in methanol

1: I2, / methanol / 0.08 h 2: 71 percent / dimethylformamide / 5 h / Ambient temperature 3: 82 percent / sodium bicarbonate, sodium dithionite / methanol View Scheme

1: 71 percent / dimethylformamide / 5 h / Ambient temperature 2: 82 percent / sodium bicarbonate, sodium dithionite / methanol View Scheme